Is 57 a prime number

Answer: No

Step-by-step explanation: For 57 to be a prime number, it would have been required that 57 has only 2 divisors, ie itself and 1. How ever 57 is a semiprime because it is the product of a two non - necessarily distinct prime numbers. inderd, 57 = 3*19, where 3 and 19 are prime numbers.

For 57 to be a prime number, it would have been required that 57 has only two divisors, i. e., itself and 1. However, 57 is a semiprime (also called biprime or 2-almost-prime), because it is the product of a two non-necessarily distinct prime numbers. Indeed, 57 = 3 x 19, where 3 and 19 are both prime numbers.