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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'' () 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 (100000001–999999999) == *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 *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 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「100000000 (number)」の詳細全文を読む スポンサード リンク
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