What is the Greatest Common Factor of 31505 and 31509?

Greatest common factor (GCF) of 31505 and 31509 is 1.

GCF(31505,31509) = 1

We will now calculate the prime factors of 31505 and 31509, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 31505 and 31509.

How to find the GCF of 31505 and 31509?

We will first find the prime factorization of 31505 and 31509. After we will calculate the factors of 31505 and 31509 and find the biggest common factor number .

Step-1: Prime Factorization of 31505

Prime factors of 31505 are 5, 6301. Prime factorization of 31505 in exponential form is:

31505 = 5¹ × 6301¹

Step-2: Prime Factorization of 31509

Prime factors of 31509 are 3, 389. Prime factorization of 31509 in exponential form is:

31509 = 3⁴ × 389¹

Step-3: Factors of 31505

List of positive integer factors of 31505 that divides 31505 without a remainder.

1, 5, 6301

Step-4: Factors of 31509

List of positive integer factors of 31509 that divides 31505 without a remainder.

1, 3, 9, 27, 81, 389, 1167, 3501, 10503

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 31505 and 31509. The biggest common factor number is the GCF number.
So the greatest common factor 31505 and 31509 is 1.

Also check out the Least Common Multiple of 31505 and 31509