What is the Greatest Common Factor of 2540 and 2556?

Greatest common factor (GCF) of 2540 and 2556 is 4.

GCF(2540,2556) = 4

We will now calculate the prime factors of 2540 and 2556, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 2540 and 2556.

How to find the GCF of 2540 and 2556?

We will first find the prime factorization of 2540 and 2556. After we will calculate the factors of 2540 and 2556 and find the biggest common factor number .

Step-1: Prime Factorization of 2540

Prime factors of 2540 are 2, 5, 127. Prime factorization of 2540 in exponential form is:

2540 = 2² × 5¹ × 127¹

Step-2: Prime Factorization of 2556

Prime factors of 2556 are 2, 3, 71. Prime factorization of 2556 in exponential form is:

2556 = 2² × 3² × 71¹

Step-3: Factors of 2540

List of positive integer factors of 2540 that divides 2540 without a remainder.

1, 2, 4, 5, 10, 20, 127, 254, 508, 635, 1270

Step-4: Factors of 2556

List of positive integer factors of 2556 that divides 2540 without a remainder.

1, 2, 3, 4, 6, 9, 12, 18, 36, 71, 142, 213, 284, 426, 639, 852, 1278

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 2540 and 2556. The biggest common factor number is the GCF number.
So the greatest common factor 2540 and 2556 is 4.

Also check out the Least Common Multiple of 2540 and 2556