Since both numbers are prime numbers, the greatest common factor (GCF) of 59 and 13 is 1.
Prime Factorizations 65 = 5 *13 1534 = 2 * 13 * 59 Thus 13 is the GCF.
The GCF is 1.
The GCF is 1.
The GCF is 1.
The GCF is 1.
The GCF is 1.
The GCF is 1.
The GCF is: 1
The GCF is 1.
The GCF is 1.
The GCF of 21 and 59 is 1.
The GCF is 1.