What is the Greatest Common Factor of 30865 and 30885?

Greatest common factor (GCF) of 30865 and 30885 is 5.

GCF(30865,30885) = 5

We will now calculate the prime factors of 30865 and 30885, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 30865 and 30885.

How to find the GCF of 30865 and 30885?

We will first find the prime factorization of 30865 and 30885. After we will calculate the factors of 30865 and 30885 and find the biggest common factor number .

Step-1: Prime Factorization of 30865

Prime factors of 30865 are 5, 6173. Prime factorization of 30865 in exponential form is:

30865 = 5¹ × 6173¹

Step-2: Prime Factorization of 30885

Prime factors of 30885 are 3, 5, 29, 71. Prime factorization of 30885 in exponential form is:

30885 = 3¹ × 5¹ × 29¹ × 71¹

Step-3: Factors of 30865

List of positive integer factors of 30865 that divides 30865 without a remainder.

1, 5, 6173

Step-4: Factors of 30885

List of positive integer factors of 30885 that divides 30865 without a remainder.

1, 3, 5, 15, 29, 71, 87, 145, 213, 355, 435, 1065, 2059, 6177, 10295

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 30865 and 30885. The biggest common factor number is the GCF number.
So the greatest common factor 30865 and 30885 is 5.

Also check out the Least Common Multiple of 30865 and 30885