What is the Greatest Common Factor of 81956 and 81968?

Greatest common factor (GCF) of 81956 and 81968 is 4.

GCF(81956,81968) = 4

We will now calculate the prime factors of 81956 and 81968, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 81956 and 81968.

How to find the GCF of 81956 and 81968?

We will first find the prime factorization of 81956 and 81968. After we will calculate the factors of 81956 and 81968 and find the biggest common factor number .

Step-1: Prime Factorization of 81956

Prime factors of 81956 are 2, 7, 2927. Prime factorization of 81956 in exponential form is:

81956 = 2² × 7¹ × 2927¹

Step-2: Prime Factorization of 81968

Prime factors of 81968 are 2, 47, 109. Prime factorization of 81968 in exponential form is:

81968 = 2⁴ × 47¹ × 109¹

Step-3: Factors of 81956

List of positive integer factors of 81956 that divides 81956 without a remainder.

1, 2, 4, 7, 14, 28, 2927, 5854, 11708, 20489, 40978

Step-4: Factors of 81968

List of positive integer factors of 81968 that divides 81956 without a remainder.

1, 2, 4, 8, 16, 47, 94, 109, 188, 218, 376, 436, 752, 872, 1744, 5123, 10246, 20492, 40984

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 81956 and 81968. The biggest common factor number is the GCF number.
So the greatest common factor 81956 and 81968 is 4.

Also check out the Least Common Multiple of 81956 and 81968