15 is not a prime number, so it can't be a prime factor.
15 is a factor of 45, but it is not a prime number.
Five is prime and a factor of both numbers.
No, 1 is not a prime number.
15 is a factor of 60.The proof: 15 x 4=60(It is, of course, not a prime factor.)
The GCF is 15 The greatest prime factor in common is 5..
1 11 is prime
5 is.
1 is the greatest and only common factor of 15 and 38. The prime factorization of 15 is 3*5. The prime factorization of 38 is 2*19
The prime factors of 15 are 3 and 5 because 3 and 5 are prime numbers that divide evenly into 15. 1 is a factor of 15, but it is not a prime number.
15 23
It is: 3 times 5 = 15