How can you tell that 32 and 95 are not prime numbers without finding their factors?

Last digit of 32 is 2 then even number then not prime (only 2 is prime and even)

Lst digit of 95 is 5 then is dividing by 5 then no prime

- - The last digit of 32 is an even number. The only even prime number is 2.

All of the other prime numbers are multiples of 2, so 32 can't be a prime.

- - The last digit of 95 is 5. That tells us that it's a multiple of 5. The only

multiple of 5 that's a prime number is 5 itself. 95 is not 5 itself, so it's

not a prime.