What is the Greatest Common Factor of 3965 and 3969?

Greatest common factor (GCF) of 3965 and 3969 is 1.

GCF(3965,3969) = 1

We will now calculate the prime factors of 3965 and 3969, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 3965 and 3969.

How to find the GCF of 3965 and 3969?

We will first find the prime factorization of 3965 and 3969. After we will calculate the factors of 3965 and 3969 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 3969

Prime factors of 3969 are 3, 7. Prime factorization of 3969 in exponential form is:

3969 = 3⁴ × 7²

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 3969

List of positive integer factors of 3969 that divides 3965 without a remainder.

1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 441, 567, 1323

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 3965 and 3969. The biggest common factor number is the GCF number.
So the greatest common factor 3965 and 3969 is 1.

Also check out the Least Common Multiple of 3965 and 3969