15 is not a Prime number, so it can't be a prime factor.
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225 75,3 25,3,3 5,5,3,3
(11w - 15)(11w - 15)
It is: 15
Prime factorization of 225 = 32 x 52Prime factorization of 325 = 52 x 13gcf(225, 325) = 52 = 25.
The GCF is 15 The greatest prime factor in common is 5..