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# 157 (number)

Cardinal One hundred [and]
fifty-seven
Ordinal 157th
Factorization prime
Roman numeral CLVII
Binary 10011101
Hexadecimal 9D

157 is the number equal to 100 + 50 + 7, following 156 and preceding 158.

It is a prime number. The next prime is 163 and the previous prime is 151, with which 157 comprises a sexy prime triplet. Taking the arithmetic mean of those primes yields 157, thus it is a balanced prime.

In base 10, 1572 is 24649. 1582 is 24964, which uses the same digits as the previous square. 157 is the largest known number with a square that relates in this way to the square of the next integer.

157 is a repdigit in base 12 (111).

157 was the margin in Geelong's demolition of the Richmond Football Club in Round 6 of the 2007 season.

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