What is the Greatest Common Factor of 25615 and 25620?

Greatest common factor (GCF) of 25615 and 25620 is 5.

GCF(25615,25620) = 5

We will now calculate the prime factors of 25615 and 25620, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 25615 and 25620.

How to find the GCF of 25615 and 25620?

We will first find the prime factorization of 25615 and 25620. After we will calculate the factors of 25615 and 25620 and find the biggest common factor number .

Step-1: Prime Factorization of 25615

Prime factors of 25615 are 5, 47, 109. Prime factorization of 25615 in exponential form is:

25615 = 5¹ × 47¹ × 109¹

Step-2: Prime Factorization of 25620

Prime factors of 25620 are 2, 3, 5, 7, 61. Prime factorization of 25620 in exponential form is:

25620 = 2² × 3¹ × 5¹ × 7¹ × 61¹

Step-3: Factors of 25615

List of positive integer factors of 25615 that divides 25615 without a remainder.

1, 5, 47, 109, 235, 545, 5123

Step-4: Factors of 25620

List of positive integer factors of 25620 that divides 25615 without a remainder.

1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 61, 70, 84, 105, 122, 140, 183, 210, 244, 305, 366, 420, 427, 610, 732, 854, 915, 1220, 1281, 1708, 1830, 2135, 2562, 3660, 4270, 5124, 6405, 8540, 12810

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 25615 and 25620. The biggest common factor number is the GCF number.
So the greatest common factor 25615 and 25620 is 5.

Also check out the Least Common Multiple of 25615 and 25620