What is the Greatest Common Factor of 30855 and 30875?

Greatest common factor (GCF) of 30855 and 30875 is 5.

GCF(30855,30875) = 5

We will now calculate the prime factors of 30855 and 30875, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 30855 and 30875.

How to find the GCF of 30855 and 30875?

We will first find the prime factorization of 30855 and 30875. After we will calculate the factors of 30855 and 30875 and find the biggest common factor number .

Step-1: Prime Factorization of 30855

Prime factors of 30855 are 3, 5, 11, 17. Prime factorization of 30855 in exponential form is:

30855 = 3¹ × 5¹ × 11² × 17¹

Step-2: Prime Factorization of 30875

Prime factors of 30875 are 5, 13, 19. Prime factorization of 30875 in exponential form is:

30875 = 5³ × 13¹ × 19¹

Step-3: Factors of 30855

List of positive integer factors of 30855 that divides 30855 without a remainder.

1, 3, 5, 11, 15, 17, 33, 51, 55, 85, 121, 165, 187, 255, 363, 561, 605, 935, 1815, 2057, 2805, 6171, 10285

Step-4: Factors of 30875

List of positive integer factors of 30875 that divides 30855 without a remainder.

1, 5, 13, 19, 25, 65, 95, 125, 247, 325, 475, 1235, 1625, 2375, 6175

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 30855 and 30875. The biggest common factor number is the GCF number.
So the greatest common factor 30855 and 30875 is 5.

Also check out the Least Common Multiple of 30855 and 30875