What is the Greatest Common Factor of 31115 and 31120?

Greatest common factor (GCF) of 31115 and 31120 is 5.

GCF(31115,31120) = 5

We will now calculate the prime factors of 31115 and 31120, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 31115 and 31120.

How to find the GCF of 31115 and 31120?

We will first find the prime factorization of 31115 and 31120. After we will calculate the factors of 31115 and 31120 and find the biggest common factor number .

Step-1: Prime Factorization of 31115

Prime factors of 31115 are 5, 7, 127. Prime factorization of 31115 in exponential form is:

31115 = 5¹ × 7² × 127¹

Step-2: Prime Factorization of 31120

Prime factors of 31120 are 2, 5, 389. Prime factorization of 31120 in exponential form is:

31120 = 2⁴ × 5¹ × 389¹

Step-3: Factors of 31115

List of positive integer factors of 31115 that divides 31115 without a remainder.

1, 5, 7, 35, 49, 127, 245, 635, 889, 4445, 6223

Step-4: Factors of 31120

List of positive integer factors of 31120 that divides 31115 without a remainder.

1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 389, 778, 1556, 1945, 3112, 3890, 6224, 7780, 15560

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 31115 and 31120. The biggest common factor number is the GCF number.
So the greatest common factor 31115 and 31120 is 5.

Also check out the Least Common Multiple of 31115 and 31120