The GCF is 1.
The GCF is 1.
The GCF of 21, 35, and 81 is 1. The prime factorization of 21 is 3*7 The prime factorization of 35 is 5*7 The prime factorization of 81 is 3*3*3*3 So they have no common factor other than 1, which is the GCF.
The only common positive integer factor of 35 and 81 is 1.
The GCF of 81, 21, 35 is 1. The GCF of 812, 135 is 1.
The GCF of 21, 35 is 7.
The GCF is 7.
The GCF is 1.
The GCF is 7.
The GCF is 1.
The GCF is 7.
The GCF is 7.
The gcf is 7