What is the Greatest Common Factor of 70515 and 70521?

Greatest common factor (GCF) of 70515 and 70521 is 3.

GCF(70515,70521) = 3

We will now calculate the prime factors of 70515 and 70521, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 70515 and 70521.

How to find the GCF of 70515 and 70521?

We will first find the prime factorization of 70515 and 70521. After we will calculate the factors of 70515 and 70521 and find the biggest common factor number .

Step-1: Prime Factorization of 70515

Prime factors of 70515 are 3, 5, 1567. Prime factorization of 70515 in exponential form is:

70515 = 3² × 5¹ × 1567¹

Step-2: Prime Factorization of 70521

Prime factors of 70521 are 3, 11, 2137. Prime factorization of 70521 in exponential form is:

70521 = 3¹ × 11¹ × 2137¹

Step-3: Factors of 70515

List of positive integer factors of 70515 that divides 70515 without a remainder.

1, 3, 5, 9, 15, 45, 1567, 4701, 7835, 14103, 23505

Step-4: Factors of 70521

List of positive integer factors of 70521 that divides 70515 without a remainder.

1, 3, 11, 33, 2137, 6411, 23507

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 70515 and 70521. The biggest common factor number is the GCF number.
So the greatest common factor 70515 and 70521 is 3.

Also check out the Least Common Multiple of 70515 and 70521