What is the Greatest Common Factor of 2455 and 2475?

Greatest common factor (GCF) of 2455 and 2475 is 5.

GCF(2455,2475) = 5

We will now calculate the prime factors of 2455 and 2475, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 2455 and 2475.

How to find the GCF of 2455 and 2475?

We will first find the prime factorization of 2455 and 2475. After we will calculate the factors of 2455 and 2475 and find the biggest common factor number .

Step-1: Prime Factorization of 2455

Prime factors of 2455 are 5, 491. Prime factorization of 2455 in exponential form is:

2455 = 5¹ × 491¹

Step-2: Prime Factorization of 2475

Prime factors of 2475 are 3, 5, 11. Prime factorization of 2475 in exponential form is:

2475 = 3² × 5² × 11¹

Step-3: Factors of 2455

List of positive integer factors of 2455 that divides 2455 without a remainder.

1, 5, 491

Step-4: Factors of 2475

List of positive integer factors of 2475 that divides 2455 without a remainder.

1, 3, 5, 9, 11, 15, 25, 33, 45, 55, 75, 99, 165, 225, 275, 495, 825

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 2455 and 2475. The biggest common factor number is the GCF number.
So the greatest common factor 2455 and 2475 is 5.

Also check out the Least Common Multiple of 2455 and 2475