The GCF of 42 and 81 is 3.
The prime factorization of 42 is 2*3*7
The prime factorization of 81 is 3*3*3*3
Their only and greatest common factor is 3.
The greatest common factor of the numbers 42, 90 and 81 is 3.
The GCF is 3.
The GCF is 3.
The GCF is 1.
The GCF is 3.
The GCF is 3.
The GCF is 3.
The greatest common factor of 52 and 81 is 1
They are 3 and 2835 respectively
The greatest common factor of 81 and 189 is 27.
The greatest common factor of 56 and 81 is 1.
The greatest common factor of 40 , 81 = 1