No.
No, 72 and 252 are not relatively prime. No pair of even numbers can be relatively prime.
2x2x3x3x7=252
252 - 11 = 241, which is a prime.
The Prime Factors of 224 are 2, 7The Prime Factors of 252 are 2, 3, 7
252 = 2 * 2 * 3 * 3 * 72, 3 and 7.The prime factors of 252 are: 2, 3, 7
No, they are not relatively prime.
The "shortened" prime factorization of 252 is 22*32*7; the "longer" is 2*2*3*3*7.
252
The prime factorization of 252 is 2 x 2 x 3 x 3 x 7.
252 126,2 63,2,2 21,3,2,2 7,3,3,2,2
-268
2 x 2 x 3 x 3 7 = 252