What is the Greatest Common Factor of 25980 and 25985?

Greatest common factor (GCF) of 25980 and 25985 is 5.

GCF(25980,25985) = 5

We will now calculate the prime factors of 25980 and 25985, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 25980 and 25985.

How to find the GCF of 25980 and 25985?

We will first find the prime factorization of 25980 and 25985. After we will calculate the factors of 25980 and 25985 and find the biggest common factor number .

Step-1: Prime Factorization of 25980

Prime factors of 25980 are 2, 3, 5, 433. Prime factorization of 25980 in exponential form is:

25980 = 2² × 3¹ × 5¹ × 433¹

Step-2: Prime Factorization of 25985

Prime factors of 25985 are 5, 5197. Prime factorization of 25985 in exponential form is:

25985 = 5¹ × 5197¹

Step-3: Factors of 25980

List of positive integer factors of 25980 that divides 25980 without a remainder.

1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 433, 866, 1299, 1732, 2165, 2598, 4330, 5196, 6495, 8660, 12990

Step-4: Factors of 25985

List of positive integer factors of 25985 that divides 25980 without a remainder.

1, 5, 5197

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 25980 and 25985. The biggest common factor number is the GCF number.
So the greatest common factor 25980 and 25985 is 5.

Also check out the Least Common Multiple of 25980 and 25985