# Is 187991521 a prime number?

It is possible to find out using mathematical methods whether a given integer is a prime number or not.

No, 187 991 521 is not a prime number.

For example, 187 991 521 can be divided by 13 711: 187 991 521 / 13711 = 13 711.

For 187 991 521 to be a prime number, it would have been required that 187 991 521 has only two divisors, i.e., itself and 1.

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