What is the Greatest Common Factor of 64840 and 64845?

Greatest common factor (GCF) of 64840 and 64845 is 5.

GCF(64840,64845) = 5

We will now calculate the prime factors of 64840 and 64845, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 64840 and 64845.

How to find the GCF of 64840 and 64845?

We will first find the prime factorization of 64840 and 64845. After we will calculate the factors of 64840 and 64845 and find the biggest common factor number .

Step-1: Prime Factorization of 64840

Prime factors of 64840 are 2, 5, 1621. Prime factorization of 64840 in exponential form is:

64840 = 2³ × 5¹ × 1621¹

Step-2: Prime Factorization of 64845

Prime factors of 64845 are 3, 5, 11, 131. Prime factorization of 64845 in exponential form is:

64845 = 3² × 5¹ × 11¹ × 131¹

Step-3: Factors of 64840

List of positive integer factors of 64840 that divides 64840 without a remainder.

1, 2, 4, 5, 8, 10, 20, 40, 1621, 3242, 6484, 8105, 12968, 16210, 32420

Step-4: Factors of 64845

List of positive integer factors of 64845 that divides 64840 without a remainder.

1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 131, 165, 393, 495, 655, 1179, 1441, 1965, 4323, 5895, 7205, 12969, 21615

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 64840 and 64845. The biggest common factor number is the GCF number.
So the greatest common factor 64840 and 64845 is 5.

Also check out the Least Common Multiple of 64840 and 64845