What is the Greatest Common Factor of 2640 and 2658?

Greatest common factor (GCF) of 2640 and 2658 is 6.

GCF(2640,2658) = 6

We will now calculate the prime factors of 2640 and 2658, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 2640 and 2658.

How to find the GCF of 2640 and 2658?

We will first find the prime factorization of 2640 and 2658. After we will calculate the factors of 2640 and 2658 and find the biggest common factor number .

Step-1: Prime Factorization of 2640

Prime factors of 2640 are 2, 3, 5, 11. Prime factorization of 2640 in exponential form is:

2640 = 2⁴ × 3¹ × 5¹ × 11¹

Step-2: Prime Factorization of 2658

Prime factors of 2658 are 2, 3, 443. Prime factorization of 2658 in exponential form is:

2658 = 2¹ × 3¹ × 443¹

Step-3: Factors of 2640

List of positive integer factors of 2640 that divides 2640 without a remainder.

1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 33, 40, 44, 48, 55, 60, 66, 80, 88, 110, 120, 132, 165, 176, 220, 240, 264, 330, 440, 528, 660, 880, 1320

Step-4: Factors of 2658

List of positive integer factors of 2658 that divides 2640 without a remainder.

1, 2, 3, 6, 443, 886, 1329

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 2640 and 2658. The biggest common factor number is the GCF number.
So the greatest common factor 2640 and 2658 is 6.

Also check out the Least Common Multiple of 2640 and 2658