13 is the greatest prime factor of 52.
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Greatest Prime Factor of 70The prime factorization of 70 is 2 X 5 X 7, so the greatest prime factor in the prime factorization of 70 is 7.
52 26,2 13,2,2
The GCF is 1 - since 13 is a prime number.
The greatest common factor of two or more prime numbers is 1.
2