What is the Greatest Common Factor of 39515 and 39520?

Greatest common factor (GCF) of 39515 and 39520 is 5.

GCF(39515,39520) = 5

We will now calculate the prime factors of 39515 and 39520, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 39515 and 39520.

How to find the GCF of 39515 and 39520?

We will first find the prime factorization of 39515 and 39520. After we will calculate the factors of 39515 and 39520 and find the biggest common factor number .

Step-1: Prime Factorization of 39515

Prime factors of 39515 are 5, 7, 1129. Prime factorization of 39515 in exponential form is:

39515 = 5¹ × 7¹ × 1129¹

Step-2: Prime Factorization of 39520

Prime factors of 39520 are 2, 5, 13, 19. Prime factorization of 39520 in exponential form is:

39520 = 2⁵ × 5¹ × 13¹ × 19¹

Step-3: Factors of 39515

List of positive integer factors of 39515 that divides 39515 without a remainder.

1, 5, 7, 35, 1129, 5645, 7903

Step-4: Factors of 39520

List of positive integer factors of 39520 that divides 39515 without a remainder.

1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 32, 38, 40, 52, 65, 76, 80, 95, 104, 130, 152, 160, 190, 208, 247, 260, 304, 380, 416, 494, 520, 608, 760, 988, 1040, 1235, 1520, 1976, 2080, 2470, 3040, 3952, 4940, 7904, 9880, 19760

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 39515 and 39520. The biggest common factor number is the GCF number.
So the greatest common factor 39515 and 39520 is 5.

Also check out the Least Common Multiple of 39515 and 39520