What is the Greatest Common Factor of 85515 and 85520?

Greatest common factor (GCF) of 85515 and 85520 is 5.

GCF(85515,85520) = 5

We will now calculate the prime factors of 85515 and 85520, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 85515 and 85520.

How to find the GCF of 85515 and 85520?

We will first find the prime factorization of 85515 and 85520. After we will calculate the factors of 85515 and 85520 and find the biggest common factor number .

Step-1: Prime Factorization of 85515

Prime factors of 85515 are 3, 5, 5701. Prime factorization of 85515 in exponential form is:

85515 = 3¹ × 5¹ × 5701¹

Step-2: Prime Factorization of 85520

Prime factors of 85520 are 2, 5, 1069. Prime factorization of 85520 in exponential form is:

85520 = 2⁴ × 5¹ × 1069¹

Step-3: Factors of 85515

List of positive integer factors of 85515 that divides 85515 without a remainder.

1, 3, 5, 15, 5701, 17103, 28505

Step-4: Factors of 85520

List of positive integer factors of 85520 that divides 85515 without a remainder.

1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1069, 2138, 4276, 5345, 8552, 10690, 17104, 21380, 42760

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 85515 and 85520. The biggest common factor number is the GCF number.
So the greatest common factor 85515 and 85520 is 5.

Also check out the Least Common Multiple of 85515 and 85520