Looks like 70, 490 = 7 x 70, 630 = 9 x 70 and 7 and 9 are co-prime.
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To find the greatest common factor (GCF) of 336 and 630, we first need to find the prime factorization of each number. The prime factorization of 336 is 2^4 * 3 * 7 and the prime factorization of 630 is 2 * 3^2 * 5 * 7. To find the GCF, we take the highest power of each common prime factor, which is 2^1 * 3^1 * 7^1 = 42. Therefore, the greatest common factor of 336 and 630 is 42.
The greatest common factor of 630 , 84 = 42
The Highest Common Factor is 126
2 x 3 x 3 x 5 x 7 = 630
2 x 32 x 5 x 7 = 630