97 (number)

97 (ninety-seven) is the natural number following 96 and preceding 98.

97
Cardinal ninety-seven
Ordinal 97th
(ninety-seventh)
Numeral system 97
Factorization Prime p_{25}
Divisors 1, 97
Roman numeral XCVII
Binary 11000012
Octal 1418
Duodecimal 8112
Hexadecimal 6116

Contents

In mathematics

97 is the 25th prime number (the largest two-digit prime number in base 10), following 89 and preceding 101. 97 is a Proth prime as it is 3 × 25 + 1.

The numbers 97, 907, 9007, 90007 and 900007 are happy primes. However, 9000007 (read as nine million seven) is composite and has the factorisation 277 × 32491.

97 is the tenth member of the Mian–Chowla sequence.

97 is the smallest factor of one more than the product of the first twenty-five terms of the Euclid–Mullin sequence, making it the twenty-sixth term.

Since there is no integer that added to its own digits adds up to 97, 97 is a self number in base 10.

In astronomy

In other fields

Ninety-seven is:

In music

In sports

See also