What is the Greatest Common Factor of 25621 and 25640?

Greatest common factor (GCF) of 25621 and 25640 is 1.

GCF(25621,25640) = 1

We will now calculate the prime factors of 25621 and 25640, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 25621 and 25640.

How to find the GCF of 25621 and 25640?

We will first find the prime factorization of 25621 and 25640. After we will calculate the factors of 25621 and 25640 and find the biggest common factor number .

Step-1: Prime Factorization of 25621

Prime factors of 25621 are 25621. Prime factorization of 25621 in exponential form is:

25621 = 25621¹

Step-2: Prime Factorization of 25640

Prime factors of 25640 are 2, 5, 641. Prime factorization of 25640 in exponential form is:

25640 = 2³ × 5¹ × 641¹

Step-3: Factors of 25621

List of positive integer factors of 25621 that divides 25621 without a remainder.

Step-4: Factors of 25640

List of positive integer factors of 25640 that divides 25621 without a remainder.

1, 2, 4, 5, 8, 10, 20, 40, 641, 1282, 2564, 3205, 5128, 6410, 12820

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 25621 and 25640. The biggest common factor number is the GCF number.
So the greatest common factor 25621 and 25640 is 1.

Also check out the Least Common Multiple of 25621 and 25640