139 (number)

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← 138 139 140 →
Cardinalone hundred thirty-nine
Ordinal139th
(one hundred thirty-ninth)
Factorizationprime
Prime34th
Divisors1, 139
Greek numeralΡΛΘ´
Roman numeralCXXXIX
Binary100010112
Ternary120113
Quaternary20234
Quinary10245
Senary3516
Octal2138
DuodecimalB712
Hexadecimal8B16
Vigesimal6J20
Base 363V36

139 (One hundred [and] thirty-nine) is the natural number following 138 and preceding 140.

In mathematics[edit]

139 is the 34th prime number. It is a twin prime with 137. Because 141 is a semiprime, 139 is a Chen prime. 139 is the smallest prime before a prime gap of length 10.[1]

This number is the sum of five consecutive prime numbers (19 + 23 + 29 + 31 + 37).

It is the smallest factor of 64079. It is also the smallest factor of the first nine terms of the Euclid–Mullin sequence, making it the tenth term.

139 is a happy number[2] and a strictly non-palindromic number.[3]

In the military[edit]

In transportation[edit]

In other fields[edit]

139 is also:

See also[edit]

References[edit]

  1. ^ Wells, D. The Penguin Dictionary of Curious and Interesting Numbers London: Penguin Group. (1987): 139
  2. ^ "Sloane's A007770 : Happy numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-27.
  3. ^ "Sloane's A016038 : Strictly non-palindromic numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-27.

External links[edit]

Psalm 139