100,000,000

100,000,000 (one hundred million) is the natural number following 99,999,999 and preceding 100,000,001.

"100 million" redirects here. For the song by Birdman, see 100 Million.
100000000
CardinalOne hundred million
Ordinal100000000th
(one hundred millionth)
Factorization28 × 58
Greek numeral
Roman numeralC
Binary1011111010111100001000000002
Ternary202220111120122013
Octal5753604008
Duodecimal295A645412
Hexadecimal5F5E10016

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, Korean, and Japanese respectively it is yi (simplified Chinese: 亿; traditional Chinese: 億; pinyin: yì) (or Chinese: 萬萬; pinyin: wànwàn in ancient texts), eok (억/億) and oku (億). These languages do not have single words for a thousand to the second, third, fifth powers, etc.

100,000,000 is also the fourth power of 100 and also the square of 10000.

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

100,000,001 to 199,999,999
  • 100,000,007 – smallest nine digit prime[1]
  • 100,005,153 – smallest triangular number with 9 digits and the 14,142nd triangular number
  • 100,020,001 = 100012, palindromic square
  • 100,544,625 = 4653, the smallest 9-digit cube
  • 102,030,201 = 101012, palindromic square
  • 102,334,155 – Fibonacci number
  • 102,400,000 = 405
  • 104,060,401 = 102012 = 1014, palindromic square
  • 105,413,504 = 147
  • 107,890,609 – Wedderburn-Etherington number[2]
  • 111,111,111 – repunit, square root of 12345678987654321
  • 111,111,113 – Chen prime, Sophie Germain prime, cousin prime.
  • 113,379,904 = 106482 = 4843 = 226
  • 115,856,201 = 415
  • 121,242,121 = 110112, palindromic square
  • 123,454,321 = 111112, palindromic square
  • 123,456,789 – smallest zeroless base 10 pandigital number
  • 125,686,521 = 112112, palindromic square
  • 126,491,971 – Leonardo prime
  • 129,140,163 = 317
  • 129,145,076 – Leyland number
  • 129,644,790 – Catalan number[3]
  • 130,691,232 = 425
  • 134,217,728 = 5123 = 89 = 227
  • 134,218,457 – Leyland number
  • 139,854,276 = 118262, the smallest zeroless base 10 pandigital square
  • 142,547,559 – Motzkin number[4]
  • 147,008,443 = 435
  • 148,035,889 = 121672 = 5293 = 236
  • 164,916,224 = 445
  • 165,580,141 – Fibonacci number
  • 167,444,795 – cyclic number in base 6
  • 170,859,375 = 157
  • 177,264,449 – Leyland number
  • 179,424,673 – 10,000,000th prime number
  • 184,528,125 = 455
  • 190,899,322 – Bell number[5]
  • 191,102,976 = 138242 = 5763 = 246

200,000,000 to 299,999,999

300,000,000 to 399,999,999

400,000,000 to 499,999,999
  • 400,080,004 = 200022, palindromic square
  • 400,763,223 – Motzkin number[4]
  • 404,090,404 = 201022, palindromic square
  • 405,071,317 = 11 + 22 + 33 + 44 + 55 + 66 + 77 + 88 + 99
  • 410,338,673 = 177
  • 418,195,493 = 535
  • 429,981,696 = 207362 = 1444 = 128
  • 433,494,437 – Fibonacci prime, Markov prime
  • 442,386,619 – alternating factorial[12]
  • 444,444,444 – repdigit
  • 459,165,024 = 545
  • 477,638,700 – Catalan number[3]
  • 479,001,599 – factorial prime[13]
  • 479,001,600 = 12!
  • 481,890,304 = 219522 = 7843 = 286

500,000,000 to 599,999,999
  • 503,284,375 = 555
  • 522,808,225 = 228652, palindromic square
  • 535,828,591 – Leonardo prime
  • 536,870,911 – third composite Mersenne number with a prime exponent
  • 536,870,912 = 229
  • 536,871,753 – Leyland number
  • 543,339,720 – Pell number[7]
  • 550,731,776 = 565
  • 554,999,445 – a Kaprekar constant for digit length 9 in base 10
  • 555,555,555 – repdigit
  • 594,823,321 = 243892 = 8413 = 296
  • 596,572,387 – Wedderburn-Etherington prime[2]

600,000,000 to 699,999,999
  • 601,692,057 = 575
  • 612,220,032 = 187
  • 617,323,716 = 248462, palindromic square
  • 644,972,544 = 8643, 3-smooth number
  • 656,356,768 = 585
  • 666,666,666 – repdigit

700,000,000 to 799,999,999

800,000,000 to 899,999,999
  • 815,730,721 = 285612 = 1694 = 138
  • 844,596,301 = 615
  • 887,503,681 = 297912 = 9613 = 316
  • 888,888,888 – repdigit
  • 893,554,688 – 2-automorphic number[15]
  • 893,871,739 = 197

900,000,000 to 999,999,999
  • 906,150,257 – smallest counterexample to the Polya conjecture
  • 916,132,832 = 625
  • 923,187,456 = 303842, the largest zeroless pandigital square
  • 942,060,249 = 306932, palindromic square
  • 987,654,321 – largest zeroless pandigital number
  • 992,436,543 = 635
  • 997,002,999 = 9993, the largest 9-digit cube
  • 999,950,884 = 316222, the largest 9-digit square
  • 999,961,560 – highest triangular number with 9 digits and the 44,720th triangular number
  • 999,999,937 – largest 9-digit prime number
  • 999,999,999 – repdigit

References
  1. Sloane, N. J. A. (ed.). "Sequence A003617 (Smallest n-digit prime)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 7 September 2017.
  2. Sloane, N. J. A. (ed.). "Sequence A001190 (Wedderburn-Etherington numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-17.
  3. Sloane, N. J. A. (ed.). "Sequence A000108 (Catalan numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-17.
  4. Sloane, N. J. A. (ed.). "Sequence A001006 (Motzkin numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-17.
  5. "Sloane's A000110 : Bell or exponential numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-17.
  6. Sloane, N. J. A. (ed.). "Sequence A003226 (Automorphic numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2019-04-06.
  7. Sloane, N. J. A. (ed.). "Sequence A000129 (Pell numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-17.
  8. "Sloane's A002201 : Superior highly composite numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-17.
  9. "Sloane's A004490 : Colossally abundant numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-17.
  10. "Sloane's A004490 : Colossally abundant numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-17.
  11. "Sloane's A002201 : Superior highly composite numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-17.
  12. "Sloane's A005165 : Alternating factorials". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-17.
  13. "Sloane's A088054 : Factorial primes". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-17.
  14. "Sloane's A000979 : Wagstaff primes". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-17.
  15. Sloane, N. J. A. (ed.). "Sequence A030984 (2-automorphic numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2021-09-01.
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