100,000,000

"100 million" redirects here. For the song by Birdman, see 100 Million.

100000000
List of numbers Integers ← 100 101 102 103 104 105 106 107 108 109
Cardinal	One hundred million
Ordinal	100000000th (one hundred millionth)
Factorization	28 × 58
Greek numeral	${\stackrel {\alpha }{\mathrm {M} }}$
Roman numeral	C
Binary	1011111010111100001000000002
Ternary	202220111120122013
Senary	135312025446
Octal	5753604008
Duodecimal	295A645412
Hexadecimal	5F5E10016

One hundred million (100,000,000) is the natural number following 99999999 and preceding 100000001.

In scientific notation, it is written as 10⁸.

East Asian languages treat 100,000,000 as a counting unit, significant as the square of a myriad, also a counting unit. In Chinese, Japanese, and Korean respectively it is yì (億) (or wànwàn 萬萬 in ancient texts), oku (億), and eok (억/億). These languages do not have single words for a thousand to the second, third, fifth power, etc.)

Selected 9-digit numbers (100,000,001–999,999,999)

• 102334155 – Fibonacci number
• 107890609 – Wedderburn-Etherington number
• 111111111 – repunit, square root of 12345678987654321
• 111111113 – Chen prime, Sophie Germain prime, cousin prime.
• 123456789 – smallest zeroless base 10 pandigital number
• 129140163 = 3¹⁷
• 129644790 – Catalan number
• 134217728 = 2²⁷
• 139854276 – the smallest pandigital square
• 142547559 – Motzkin number
• 165580141 – Fibonacci number
• 179424673 – 10000000th prime number
• 190899322 – Bell number
• 214358881 = 11⁸
• 222222222 – repdigit
• 222222227 – safe prime
• 225058681 – Pell number
• 225331713 – self-descriptive number in base 9
• 244140625 = 5¹²
• 253450711 – Wedderburn-Etherington number
• 267914296 – Fibonacci number
• 268402687 – Carol number
• 268435456 = 2²⁸
• 268468223 – Kynea number
• 272400600 – the number of terms of the harmonic series required to pass 20
• 275305224 – the number of magic squares of order 5, excluding rotations and reflections
• 282475249 = 7¹⁰
• 333333333 – repdigit
• 367567200 – colossally abundant number, superior highly composite number
• 381654729 – the only polydivisible number that is also a zeroless pandigital number
• 387420489 = 3¹⁸, 9⁹ and in tetration notation ²9
• 400763223 – Motzkin number
• 433494437 – Fibonacci number
• 442386619 – alternating factorial
• 444444444 – repdigit
• 477638700 – Catalan number
• 479001599 – factorial prime
• 479001600 = 12!
• 536870912 = 2²⁹
• 543339720 – Pell number
• 554999445 – 9-digit analogue to Kaprekar constant
• 555555555 – repdigit
• 596572387 – Wedderburn-Etherington number
• 666666666 – repdigit
• 701408733 – Fibonacci number
• 715827883 – Wagstaff prime
• 777777777 – repdigit
• 815730721 = 13⁸
• 888888888 – repdigit
• 906150257 – smallest counterexample to the Polya conjecture
• 987654321 – largest zeroless pandigital number
• 999999937 – largest 9-digit prime
• 999999999 – repdigit

See also

• Social Security number