The prime factorizatio of 58 is:
2 X 29
Exponents are not needed because only one 2 and one 29 are the prime factors of 58. If exponents were used, it would be 21 X 291.
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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 greatest common factor of 38 and 57 is 19. The prime factorization of 38 is 2*19 The prime factorization of 57 is 3*19 So the GCF is 19.
68 34,2 17,2,2 38 19,2
First of all both numbers are expressed as the product of primes. Prime factorization of 28 = 2 x 2 x 7 Prime factorization of 38 = 2 x 19 As it can be seen only 2 is common in prime factorization of both numbers. 2 is the only number except 1 that goes into 28 and 38. So, GCF(28, 38) = 2.
2 x 19 = 38 3 x 3 x 3 x 3 = 81