17, 23 and 31 are prime. 39 is not.
51 is not a prime number: 3x17=51
17, 19, 23, 29, and 31
51 is composite number
17, 19, 23, 29, and 31
17, 23 and 31 are prime. 39 is not.
39
51 is not a prime number: 3x17=51
17, 19, 23, 29, and 31
51 is composite number
17, 31 and 23 are.
51 = 3 x 17
17, 19, 23, 29, and 31
No, 12121 is composite. Its prime factors are: 31 x 23 x 17 = 12121
prime numbers above 13 = 17, 19, 23, 29, 31,...
7 11 13 17 19 23 29.
39 is not prime because 13 and 3 are factors of it. To be prime the number cannot have any factors except itself and 1.