# Greatest Common Factor of 55 and 77

Greatest common factor (GCF) of 55 and 77 is 11.

GCF(55,77) = 11

We will now calculate the prime factors of 55 and 77, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 55 and 77.

GCF Calculator and

## Prime Factorization of 55

Prime factors of 55 are 5, 11. Prime factorization of 55 in exponential form is:

55 = 51 × 111

## Prime Factorization of 77

Prime factors of 77 are 7, 11. Prime factorization of 77 in exponential form is:

77 = 71 × 111

### Factors of 55

List of positive integer factors of 55 that divides 55 without a remainder.

1, 5, 11

### Factors of 77

List of positive integer factors of 77 that divides 55 without a remainder.

1, 7, 11

### Greatest Common Factor

We found the factors and prime factorization of 55 and 77. The biggest common factor number is the GCF number.
So the greatest common factor 55 and 77 is 11.

Also check out the Least Common Multiple of 55 and 77