What is the Greatest Common Factor of 66956 and 66970?

Greatest common factor (GCF) of 66956 and 66970 is 2.

GCF(66956,66970) = 2

We will now calculate the prime factors of 66956 and 66970, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 66956 and 66970.

How to find the GCF of 66956 and 66970?

We will first find the prime factorization of 66956 and 66970. After we will calculate the factors of 66956 and 66970 and find the biggest common factor number .

Step-1: Prime Factorization of 66956

Prime factors of 66956 are 2, 19, 881. Prime factorization of 66956 in exponential form is:

66956 = 2² × 19¹ × 881¹

Step-2: Prime Factorization of 66970

Prime factors of 66970 are 2, 5, 37, 181. Prime factorization of 66970 in exponential form is:

66970 = 2¹ × 5¹ × 37¹ × 181¹

Step-3: Factors of 66956

List of positive integer factors of 66956 that divides 66956 without a remainder.

1, 2, 4, 19, 38, 76, 881, 1762, 3524, 16739, 33478

Step-4: Factors of 66970

List of positive integer factors of 66970 that divides 66956 without a remainder.

1, 2, 5, 10, 37, 74, 181, 185, 362, 370, 905, 1810, 6697, 13394, 33485

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 66956 and 66970. The biggest common factor number is the GCF number.
So the greatest common factor 66956 and 66970 is 2.

Also check out the Least Common Multiple of 66956 and 66970