What is the Greatest Common Factor of 61960 and 61972?

Greatest common factor (GCF) of 61960 and 61972 is 4.

GCF(61960,61972) = 4

We will now calculate the prime factors of 61960 and 61972, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 61960 and 61972.

How to find the GCF of 61960 and 61972?

We will first find the prime factorization of 61960 and 61972. After we will calculate the factors of 61960 and 61972 and find the biggest common factor number .

Step-1: Prime Factorization of 61960

Prime factors of 61960 are 2, 5, 1549. Prime factorization of 61960 in exponential form is:

61960 = 2³ × 5¹ × 1549¹

Step-2: Prime Factorization of 61972

Prime factors of 61972 are 2, 15493. Prime factorization of 61972 in exponential form is:

61972 = 2² × 15493¹

Step-3: Factors of 61960

List of positive integer factors of 61960 that divides 61960 without a remainder.

1, 2, 4, 5, 8, 10, 20, 40, 1549, 3098, 6196, 7745, 12392, 15490, 30980

Step-4: Factors of 61972

List of positive integer factors of 61972 that divides 61960 without a remainder.

1, 2, 4, 15493, 30986

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 61960 and 61972. The biggest common factor number is the GCF number.
So the greatest common factor 61960 and 61972 is 4.

Also check out the Least Common Multiple of 61960 and 61972