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100,000,000

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Covid-19
Cardinal  One hundred million
Roman numeral  C
Factorization  2 × 5
Ternary  202220111120122013
Ordinal  100000000th (one hundred millionth)
Binary  1011111010111100001000000002

100 000 000 years from now


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

Contents

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 () (or wànwàn 萬萬 in ancient texts), oku (), 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 – a Kaprekar constant for digit length 9 in base 10
  • 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
  • References

    100,000,000 Wikipedia


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