What is the Greatest Common Factor of 3965 and 3972?

Greatest common factor (GCF) of 3965 and 3972 is 1.

GCF(3965,3972) = 1

We will now calculate the prime factors of 3965 and 3972, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 3965 and 3972.

How to find the GCF of 3965 and 3972?

We will first find the prime factorization of 3965 and 3972. After we will calculate the factors of 3965 and 3972 and find the biggest common factor number .

Step-1: Prime Factorization of 3965

Prime factors of 3965 are 5, 13, 61. Prime factorization of 3965 in exponential form is:

3965 = 5¹ × 13¹ × 61¹

Step-2: Prime Factorization of 3972

Prime factors of 3972 are 2, 3, 331. Prime factorization of 3972 in exponential form is:

3972 = 2² × 3¹ × 331¹

Step-3: Factors of 3965

List of positive integer factors of 3965 that divides 3965 without a remainder.

1, 5, 13, 61, 65, 305, 793

Step-4: Factors of 3972

List of positive integer factors of 3972 that divides 3965 without a remainder.

1, 2, 3, 4, 6, 12, 331, 662, 993, 1324, 1986

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 3965 and 3972. The biggest common factor number is the GCF number.
So the greatest common factor 3965 and 3972 is 1.

Also check out the Least Common Multiple of 3965 and 3972