5 is.
5
4 is a prime factor of 20 whereas it isn't a factor of 50.
15 is not a prime number, so it can't be a prime factor.
50 is not a prime factor or a prime number because it has more than two factors and so it is a composite number
Since 15 is a factor of 135, it is automatically the GCF.
50 25,2 5,5,2
There are 15 prime numbers up to 50.
The GCF of 15, 24, and 72 is 3. There is no GCF for 63, 20, and 50. This makes it relatively prime.
15 is a factor of 45, but it is not a prime number.
50 has only two prime factors: 2 and 5.
Five is prime and a factor of both numbers.
Prime factors of 50 are 2 and 5 Prime factor of 5 is itself 5