Is 21592 a prime number

Answer 1

no.

a Prime number is a number that can only be divided by itself and 1.

21592 is an even number. all even numbers are divisible by at least themselves and the number 2.

if we divide 21592 by 2 we get 10796. this number is again even, we divide it by 2 again and we get 5398. this number is again even, we divide it by 2 again and we get 2699.

we now know that 21592 = 2 x 10796 = 4 x 5398 = 8 x 2699

therefore 21592 is not a prime number as it is divisible by 1,2,4,8,2699,5398,10796 and itself.