What is the Greatest Common Factor of 6520 and 6540?

Greatest common factor (GCF) of 6520 and 6540 is 20.

GCF(6520,6540) = 20

We will now calculate the prime factors of 6520 and 6540, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 6520 and 6540.

How to find the GCF of 6520 and 6540?

We will first find the prime factorization of 6520 and 6540. After we will calculate the factors of 6520 and 6540 and find the biggest common factor number .

Step-1: Prime Factorization of 6520

Prime factors of 6520 are 2, 5, 163. Prime factorization of 6520 in exponential form is:

6520 = 2³ × 5¹ × 163¹

Step-2: Prime Factorization of 6540

Prime factors of 6540 are 2, 3, 5, 109. Prime factorization of 6540 in exponential form is:

6540 = 2² × 3¹ × 5¹ × 109¹

Step-3: Factors of 6520

List of positive integer factors of 6520 that divides 6520 without a remainder.

1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 652, 815, 1304, 1630, 3260

Step-4: Factors of 6540

List of positive integer factors of 6540 that divides 6520 without a remainder.

1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 109, 218, 327, 436, 545, 654, 1090, 1308, 1635, 2180, 3270

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 6520 and 6540. The biggest common factor number is the GCF number.
So the greatest common factor 6520 and 6540 is 20.

Also check out the Least Common Multiple of 6520 and 6540