What is the Greatest Common Factor of 64561 and 64575?

Greatest common factor (GCF) of 64561 and 64575 is 7.

GCF(64561,64575) = 7

We will now calculate the prime factors of 64561 and 64575, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 64561 and 64575.

How to find the GCF of 64561 and 64575?

We will first find the prime factorization of 64561 and 64575. After we will calculate the factors of 64561 and 64575 and find the biggest common factor number .

Step-1: Prime Factorization of 64561

Prime factors of 64561 are 7, 23, 401. Prime factorization of 64561 in exponential form is:

64561 = 7¹ × 23¹ × 401¹

Step-2: Prime Factorization of 64575

Prime factors of 64575 are 3, 5, 7, 41. Prime factorization of 64575 in exponential form is:

64575 = 3² × 5² × 7¹ × 41¹

Step-3: Factors of 64561

List of positive integer factors of 64561 that divides 64561 without a remainder.

1, 7, 23, 161, 401, 2807, 9223

Step-4: Factors of 64575

List of positive integer factors of 64575 that divides 64561 without a remainder.

1, 3, 5, 7, 9, 15, 21, 25, 35, 41, 45, 63, 75, 105, 123, 175, 205, 225, 287, 315, 369, 525, 615, 861, 1025, 1435, 1575, 1845, 2583, 3075, 4305, 7175, 9225, 12915, 21525

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 64561 and 64575. The biggest common factor number is the GCF number.
So the greatest common factor 64561 and 64575 is 7.

Also check out the Least Common Multiple of 64561 and 64575