What is the Greatest Common Factor of 2490 and 2505?

Greatest common factor (GCF) of 2490 and 2505 is 15.

GCF(2490,2505) = 15

We will now calculate the prime factors of 2490 and 2505, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 2490 and 2505.

How to find the GCF of 2490 and 2505?

We will first find the prime factorization of 2490 and 2505. After we will calculate the factors of 2490 and 2505 and find the biggest common factor number .

Step-1: Prime Factorization of 2490

Prime factors of 2490 are 2, 3, 5, 83. Prime factorization of 2490 in exponential form is:

2490 = 2¹ × 3¹ × 5¹ × 83¹

Step-2: Prime Factorization of 2505

Prime factors of 2505 are 3, 5, 167. Prime factorization of 2505 in exponential form is:

2505 = 3¹ × 5¹ × 167¹

Step-3: Factors of 2490

List of positive integer factors of 2490 that divides 2490 without a remainder.

1, 2, 3, 5, 6, 10, 15, 30, 83, 166, 249, 415, 498, 830, 1245

Step-4: Factors of 2505

List of positive integer factors of 2505 that divides 2490 without a remainder.

1, 3, 5, 15, 167, 501, 835

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 2490 and 2505. The biggest common factor number is the GCF number.
So the greatest common factor 2490 and 2505 is 15.

Also check out the Least Common Multiple of 2490 and 2505