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187 (number) : ウィキペディア英語版 | 187 (number)
187 (one hundred () eighty-seven) is the natural number following 186 and preceding 188. ==In mathematics==
* 187 is an odd number * 187 is a composite number * 187 is a deficient number, as 29 is less than 187 * 187 is a self number * 187 is a square-free number * Prime factors of 187: 11 × 17 * Divisors of 187: 1, 11, 17, 187 * 187 is the sum of 3 consecutive prime numbers: 59 + 61 + 67 * 187 is the sum of 9 consecutive primes: 7 + 11 + 13 + 17 + 19 + 23 + 29 + 31 + 37 * 187 is the difference of 2 square numbers: 142 - 32, and 942 -932 * 187 is a centered 31-gonal number
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