What is the Greatest Common Factor of 25280 and 25285?

Greatest common factor (GCF) of 25280 and 25285 is 5.

GCF(25280,25285) = 5

We will now calculate the prime factors of 25280 and 25285, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 25280 and 25285.

How to find the GCF of 25280 and 25285?

We will first find the prime factorization of 25280 and 25285. After we will calculate the factors of 25280 and 25285 and find the biggest common factor number .

Step-1: Prime Factorization of 25280

Prime factors of 25280 are 2, 5, 79. Prime factorization of 25280 in exponential form is:

25280 = 2⁶ × 5¹ × 79¹

Step-2: Prime Factorization of 25285

Prime factors of 25285 are 5, 13, 389. Prime factorization of 25285 in exponential form is:

25285 = 5¹ × 13¹ × 389¹

Step-3: Factors of 25280

List of positive integer factors of 25280 that divides 25280 without a remainder.

1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 158, 160, 316, 320, 395, 632, 790, 1264, 1580, 2528, 3160, 5056, 6320, 12640

Step-4: Factors of 25285

List of positive integer factors of 25285 that divides 25280 without a remainder.

1, 5, 13, 65, 389, 1945, 5057

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 25280 and 25285. The biggest common factor number is the GCF number.
So the greatest common factor 25280 and 25285 is 5.

Also check out the Least Common Multiple of 25280 and 25285