Question

If 521 is a prime number, prove that 538 is not divisible by 17

Answer 1

521 is a prime number because it has only two distinct divisors: 1 and itself (521). As a consequence, 521 is only a multiple of 1 and 521.

538 is not divisible by 17..

Answer 2

Answer:

divisibility test of 17 : multiply the unit place digit with 5 and then subtract the answer from the rest.

Explanation: unit=8

8×5=40

53-40=13

=>13 is not divisible by 17 which proves that 538 is not divisible by 17.