Numerology is any study of the purported divine, mystical or other special relationship between a number and some coinciding observed (or perceived) events. It has many systems and traditions and beliefs. Numerology and numerological divination by systems such as isopsephy were popular among early mathematicians, such as Pythagoras, but are no longer considered part of mathematics and are regarded as pseudomathematics or pseudoscience by modern scientists.
Despite the long history of numerological ideas, the word "numerology" is not recorded in English before c.1907.
The term numerologist is also used derogatorily for those perceived to place excess faith in numerical patterns (and draw scientifically unsound inferences from them), even if those people do not practice traditional numerology. For example, in his 1997 book Numerology: Or What Pythagoras Wrought, mathematician Underwood Dudley uses the term to discuss practitioners of the Elliott wave principle of stock market analysis.
Some remarks on the purported or commonly perceived numerological significance of specific small numbers may be found at the articles on these numbers, as at 77 (number).
Modern numerology often contains aspects of a variety of ancient cultures and teachers, including Babylonia, Pythagoras and his followers (Greece, 6th century B.C.), astrological philosophy from Hellenistic Alexandria, early Christian mysticism, early Gnostics, the Hebrew system of the Kabbalah, The Hindu Vedas, the Chinese "Circle of the Dead", Egyptian "Book of the Masters of the Secret House" (Ritual of the Dead).
Pythagoras and other philosophers of the time believed that because mathematical concepts were more "practical" (easier to regulate and classify) than physical ones, they had greater actuality. St. Augustine of Hippo (A.D. 354–430) wrote "Numbers are the Universal language offered by the deity to humans as confirmation of the truth." Similar to Pythagoras, he too believed that everything had numerical relationships and it was up to the mind to seek and investigate the secrets of these relationships or have them revealed by divine grace. See Numerology and the Church Fathers for early Christian views. However, that does not mean that Pythagoras had coined himself the system one calls numerology. Pythagoras had only paved the way to the observation of numbers as archetypes rather than mere numerals.
In 325 A.D., following the First Council of Nicaea, departures from the beliefs of the state Church were classified as civil violations within the Roman Empire. Numerology had not found favor with the Christian authority of the day and was assigned to the field of unapproved beliefs along with astrology and other forms of divination and "magic". Despite this religious purging, the spiritual significance assigned to the heretofore "sacred" numbers had not disappeared; several numbers, such as the "Jesus number" have been commented and analyzed by Dorotheus of Gaza and numerology still is used at least in conservative Greek Orthodox circles. Numerology is prominent throughout Sir Thomas Browne's 1658 literary Discourse The Garden of Cyrus. Throughout its pages the author attempts to demonstrate that the number five and the related Quincunx pattern can be found throughout the arts, in design, and in nature – particularly botany.
Modern numerology has various antecedents. Ruth A. Drayer's book, Numerology, The Power in Numbers (Square One Publishers) says that around the turn of the century (from 1800 to 1900 A.D.) Mrs. L. Dow Balliett combined Pythagoras' work with Biblical reference. Then on Oct 23, 1972, Balliett's student, Dr. Juno Jordan, changed Numerology further and helped it to become the system known today under the title "Pythagorean", although Pythagoras himself had nothing to do with the system. Dr. Jordan's work "The Romance in Your Name" was the first to provide a fairly comprehensive system for identifying key numerological influences in one's name and birth date and remains a seminal interpretive guide for practitioners today. Subsequent 'numerologists' including Lynn Buess (1978), Mark Gruner (1979), Kathleen Roquemore (1985), and Florence Campbell (1983), expanded on the use of numerology for assessing major aspects of personality and cyclical patterns in life.
Australian philosopher David Stove pointed out different pseudoscientific beliefs, for example numerology and astrology, may be pathological in different ways. When critiquing such pseudoscientific beliefs, philosophers and scientists should take into account that the fallacies that give rise to the "particular awfulness" of one pseudoscientific belief may not be applicable to another.
Number definitions 
- Individual; aggressor; self; leadership yang
- Balance; union; receptive; partnership yin
- Action; restlessness; life experience
- Home/family; responsibility
- Thought/consciousness; spirit
- Highest level of changes
Some numerologists analyze double-digit numbers as well, from 10 to 99. These numbers (e.g., 11, 22, 33,...) are commonly referred to as "master numbers" (Buess, 2005). This study of numerology is based on the evidence of significant double-digit numbers in the Kabbalah, the I-ching, the Pythagorean numerology, the Tarot Arcana of the Eastern faiths, and the Runes of the Viking age. Various authors of numerology books determine various meanings for each number, from 0 to 9 and from 10 to 99.
Alphabetic systems 
There are many numerology systems which assign numerical value to the letters of an alphabet. Examples include the Abjad numerals in Arabic, the Hebrew numerals, Armenian numerals, and Greek numerals. The practice within Jewish tradition of assigning mystical meaning to words based on their numerical values, and on connections between words of equal value, is known as gematria.
1 = a, j, s, 2 = b, k, t, 3 = c, l, u, 4 = d, m, v, 5 = e, n, w, 6 = f, o, x, 7 = g, p, y, 8 = h, q, z, 9 = i, r,
...and are then summed.
- 3,489 → 3 + 4 + 8 + 9 = 24 → 2 + 4 = 6
- Hello → 8 + 5 + 3 + 3 + 6 = 25 → 2 + 5 = 7
Different methods of calculation exist, including Chaldean, Pythagorean, Hebraic, Helyn Hitchcock's method, Phonetic, Japanese, Arabic and Indian.
The examples above are calculated using decimal (base 10) arithmetic. Other number systems exist, such as binary, octal, hexadecimal and vigesimal; summing digits in these bases yields different results. The first example, shown above, appears thus when rendered in octal (base 8):
- 3,48910 = 66418 → 6 + 6 + 4 + 1 = 218 → 2 + 1 = 38 = 310
Abjad system 
The Arabic system of numerology is known as Abjad notation or Abjad numerals. In this system each letter of Arabic alphabet has a numerical value. This system is mother of ilm-ul-cipher (Science of Cipher), and ilm-ul-huroof (Science of Alphabet Letters).
Chinese numerology 
Some Chinese assign a different set of meanings to the numbers and certain number combinations are considered luckier than others. In general, even numbers are considered lucky, since it is believed that good luck comes in pairs.
Traditional Chinese Medicine (TCM), and its associated fields such as acupuncture, base their system on mystical numerical associations, such as the “12 vessels circulating blood and air corresponding to the 12 rivers flowing toward the Central Kingdom; and 365 parts of the body, one for each day of the year” being the basis of locating acupuncture points.
Chinese number definitions 
Cantonese frequently associate numbers with the following connotations (based on its sound), which may differ in other Chinese languages:
- 一 [jɐ́t] – sure
- 二 [ji̭ː] – easy 易 [ji̭ː]
- 三 [sáːm] – live 生 [sáːŋ] but it can also be seen as a halved eight when using Arabic numerals (3) (8) and so considered unlucky.
- 四 [sēi] – considered unlucky since 4 is a homophone with the word for death or suffering 死 [sěi], yet in the Shanghainese, it is a homophone of water (水)and is considered lucky since water is associated with money.
- 五 [ŋ̬] – the self, me, myself 吾 [ŋ̭], nothing, never 唔 [ŋ, m][need tone] in the Shanghainese, it is a homophone of fish (鱼)
- 六 [lùːk] – easy and smooth, all the way
- 七 [tsʰɐ́t] – a slang/vulgar word in Cantonese.
- 八 [pāːt] – sudden fortune, prosperity 發 [fāːt]
- 九 [kɐ̌u] – long in time 久 [kɐ̌u], enough 夠 [kɐ̄u] or a slang/vulgar word derived from dog 狗 [kɐ̌u] in Cantonese
Some "lucky number" combinations include:
- 99 – doubly long in time, hence eternal; used in the name of a popular Chinese American supermarket chain, 99 Ranch Market.
- 168 – many premium-pay telephone numbers in China begin with this number, which is considered lucky. It is also the name of a motel chain in China (Motel 168).
- 888 – Three times the prosperity, means "wealthy wealthy wealthy".
Other fields 
Numerology and astrology 
Some astrologers believe that each number from 0 to 9 is ruled by a celestial body in our solar system.
Numerology and alchemy 
Some alchemical theories were closely related to numerology. Iranian alchemist Jabir ibn Hayyan framed his experiments in an elaborate numerology based on the names of substances in the Arabic language.
"Numerology" in science 
Scientific theories are sometimes labeled "numerology" if their primary inspiration appears to be a set of patterns rather than scientific observations. This colloquial use of the term is quite common within the scientific community and it is mostly used to dismiss a theory as questionable science.
The best known example of "numerology" in science involves the coincidental resemblance of certain large numbers that intrigued such eminent men as mathematical physicist Paul Dirac, mathematician Hermann Weyl and astronomer Arthur Stanley Eddington. These numerical coincidences refer to such quantities as the ratio of the age of the universe to the atomic unit of time, the number of electrons in the universe, and the difference in strengths between gravity and the electric force for the electron and proton. ("Is the Universe Fine Tuned for Us?", Stenger, V.J., page 3).
The discovery of atomic triads (dealing with elements primarily in the same group or column of the periodic table) was considered a form of numerology, and yet ultimately led to the construction of the periodic table. Here the atomic weight of the lightest element and the heaviest are summed, and averaged, and the average is found to be very close to that of the intermediate weight element. This didn't work with every triplet in the same group, but worked often enough to allow later workers to create generalizations. See Döbereiner's Triads
Large number co-incidences continue to fascinate many mathematical physicists. For instance, James G. Gilson has constructed a "Quantum Theory of Gravity" based loosely on Dirac's large number hypothesis.
There have been a few examples of numerology that have led to theories that transformed society: see the mention of Kirchhoff and Balmer in Good (1962, p. 316) ... and one can well include Kepler on account of his third law. It would be fair enough to say that numerology was the origin of the theories of electromagnetism, quantum mechanics, gravitation.... So I intend no disparagement when I describe a formula as numerological.
When a numerological formula is proposed, then we may ask whether it is correct. ... I think an appropriate definition of correctness is that the formula has a good explanation, in a Platonic sense, that is, the explanation could be based on a good theory that is not yet known but ‘exists’ in the universe of possible reasonable ideas.
Numerology in gaming 
Some players apply methods that are sometimes called numerological in games which involve numbers but no skill, such as bingo, roulette, keno, or lotteries. Although no strategy can be applied to increase odds in such games, players may employ "lucky numbers" to find what they think will help them. There is no evidence that any such "numerological strategy" yields a better outcome than pure chance, but the methods are sometimes encouraged, e.g. by casino owners.
Skeptics argue that numbers have no occult significance and cannot by themselves influence a person's life. Skeptics therefore regard numerology as a superstition and a pseudoscience that uses numbers to give the subject a veneer of scientific authority. For example, there is no evidence that all people born on the same date have the same future, contrary to the claims of numerologists.
Popular culture 
Numerology is a popular plot device in fiction. It can range from a casual item for comic effect, such as in an episode titled The Seance of the 1950s TV sitcom I Love Lucy, where Lucy dabbles in numerology, to a central element of the storyline, such as the movie π, in which the protagonist meets a numerologist searching for hidden numerical patterns in the Torah. The movie The Number 23 was based on the mystery of the number 23.
See also 
- FEMINIST NUMEROLOGY by Prof John Webb, Science in Africa
- Underwood Dudley (1997). Numerology. MAA. ISBN 0-88385-507-0.
- "The Skeptic's Dictionary: numerology". Skepdic.com. Retrieved 2012-08-31.
- Lynne Kelly (2004). The Skeptic's Guide To The Paranormal. Allen & Unwin. ISBN 1-74114-059-5.
- "numerology, n.". OED Online. September 2012. Oxford University Press. http://oed.com/view/Entry/129129?redirectedFrom=numerology& (accessed November 23, 2012).
- "Numerology". Paralumun.com. Retrieved 2012-08-31.
- "Η Ελληνική γλ�σσα, ο Πλάτων, ο Αριστοτέλης και η Ορθοδοξία" (in Greek). Acrobase.gr. Retrieved 2012-08-31.
- "Αγαπητέ Πέτρο, Χρόνια Πολλά και ευλογημένα από Τον Κύριο Ημ�ν Ιησού Χριστό" (in Greek). Users.otenet.gr. Retrieved 2012-08-31.
- "It is the same story even beyond the pale. For example, no one actually knows, even, what is wrong with numerology. Philosophers, of course, use numerology as a stock example of thought gone hopelessly wrong, and they are right to do so; still, they cannot tell you what it is that is wrong with it. If you ask a philosopher this, the best he will be able to come up with is a bit of Positivism about unverifiability, or a bit of Popperism about unfalsifiability: answers which the philosopher himself will know to be unsatisfactory on various grounds, but which have in addition this defect, that they put numerology in the same boat as, for example, astrology. But numerology is actually quite as different from astrology as astrology is from astronomy. Philosophers do not know this, because, while they often look at the astrological parts of newspapers for fun, they never read a book of numerology. If they did, they would soon find out that the peculiar awfulness of numerology, while clearly quite different from that of astrology, is utterly elusive in itself." David Stove, "What Is Wrong With Our Thoughts?", chapter 7 of Stove's The Plato Cult and Other Philosophical Follies (Blackwell, 1991).
- "Numerology Chart & Meanings". NumerologyCalculator.org. Retrieved 22 December 2012.
- "Comparative Numerology: The Numbers One to Ten: Fundamental Powers". Psyche.com. Retrieved 22 December 2012.
- Cheiro's Book of Numbers pg 65
- ”Seeing the Body: The Divergence of Ancient Chinese and Western Medical Illustration”, Camillia Matuk, Northwestern University, 
- "Colorado University" (PDF). Retrieved 2012-08-31.
- "fine-structure-constant.org". fine-structure-constant.org. Retrieved 2012-08-31.
- Cosmic numbers: Pauli and Jung's love of numerology, by Dan Falk, Magazine issue 2705, 24 April 2009 – New Scientist
- "Number Symbolism – Myth or Reality?". CasinoObserver.com. Retrieved 2013-03-06.
- Schimmel, Annemarie (1993). The Mystery of Numbers. New York, USA: Oxford University Press. p. 314. ISBN 0-19-508919-7.; a scholarly compendium of the connotations and associations of numbers in historical cultures
- Pandey, A. (2006). Numerology: The number game
- Pochat Wilfrid & Pirmaïer Michel, (2011). The Unveiled Numerology – vol. 1 – You do not necessarily carry the name you think
- Dudley, U. (1997). Numerology: Or, What Pythagoras Wrought. Mathematical Association of America. – a skeptical survey of the field through history
- Nagy, A. M. (2007). The Secret of Pythagoras (DVD). ASIN B000VPTFT6
- E. W. Bullinger (1921). Number in Scripture. Eyre & Spottiswoode (Bible Warehouse) Ltd.
- Drayer, R.A. (2002) Numerology, The Power in Numbers, A Right & Left Brain Approach. ISBN 0-9640321-3-9
- Book of the Masters of the Secret House
|Look up numerology in Wiktionary, the free dictionary.|
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- Number symbolism on Encyclopædia Britannica
- The Theology of Arithmetic
- The Resurrection Numbers: Eschatological symbolism in Judaism and early Christianity