What is the Greatest Common Factor of 64991 and 65008?

Greatest common factor (GCF) of 64991 and 65008 is 17.

GCF(64991,65008) = 17

We will now calculate the prime factors of 64991 and 65008, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 64991 and 65008.

How to find the GCF of 64991 and 65008?

We will first find the prime factorization of 64991 and 65008. After we will calculate the factors of 64991 and 65008 and find the biggest common factor number .

Step-1: Prime Factorization of 64991

Prime factors of 64991 are 17, 3823. Prime factorization of 64991 in exponential form is:

64991 = 17¹ × 3823¹

Step-2: Prime Factorization of 65008

Prime factors of 65008 are 2, 17, 239. Prime factorization of 65008 in exponential form is:

65008 = 2⁴ × 17¹ × 239¹

Step-3: Factors of 64991

List of positive integer factors of 64991 that divides 64991 without a remainder.

1, 17, 3823

Step-4: Factors of 65008

List of positive integer factors of 65008 that divides 64991 without a remainder.

1, 2, 4, 8, 16, 17, 34, 68, 136, 239, 272, 478, 956, 1912, 3824, 4063, 8126, 16252, 32504

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 64991 and 65008. The biggest common factor number is the GCF number.
So the greatest common factor 64991 and 65008 is 17.

Also check out the Least Common Multiple of 64991 and 65008