What is the Greatest Common Factor of 10621 and 10640?

Greatest common factor (GCF) of 10621 and 10640 is 19.

GCF(10621,10640) = 19

We will now calculate the prime factors of 10621 and 10640, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 10621 and 10640.

How to find the GCF of 10621 and 10640?

We will first find the prime factorization of 10621 and 10640. After we will calculate the factors of 10621 and 10640 and find the biggest common factor number .

Step-1: Prime Factorization of 10621

Prime factors of 10621 are 13, 19, 43. Prime factorization of 10621 in exponential form is:

10621 = 13¹ × 19¹ × 43¹

Step-2: Prime Factorization of 10640

Prime factors of 10640 are 2, 5, 7, 19. Prime factorization of 10640 in exponential form is:

10640 = 2⁴ × 5¹ × 7¹ × 19¹

Step-3: Factors of 10621

List of positive integer factors of 10621 that divides 10621 without a remainder.

1, 13, 19, 43, 247, 559, 817

Step-4: Factors of 10640

List of positive integer factors of 10640 that divides 10621 without a remainder.

1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 35, 38, 40, 56, 70, 76, 80, 95, 112, 133, 140, 152, 190, 266, 280, 304, 380, 532, 560, 665, 760, 1064, 1330, 1520, 2128, 2660, 5320

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 10621 and 10640. The biggest common factor number is the GCF number.
So the greatest common factor 10621 and 10640 is 19.

Also check out the Least Common Multiple of 10621 and 10640