What is the Greatest Common Factor of 97815 and 97830?

Greatest common factor (GCF) of 97815 and 97830 is 15.

GCF(97815,97830) = 15

We will now calculate the prime factors of 97815 and 97830, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 97815 and 97830.

How to find the GCF of 97815 and 97830?

We will first find the prime factorization of 97815 and 97830. After we will calculate the factors of 97815 and 97830 and find the biggest common factor number .

Step-1: Prime Factorization of 97815

Prime factors of 97815 are 3, 5, 6521. Prime factorization of 97815 in exponential form is:

97815 = 3¹ × 5¹ × 6521¹

Step-2: Prime Factorization of 97830

Prime factors of 97830 are 2, 3, 5, 1087. Prime factorization of 97830 in exponential form is:

97830 = 2¹ × 3² × 5¹ × 1087¹

Step-3: Factors of 97815

List of positive integer factors of 97815 that divides 97815 without a remainder.

1, 3, 5, 15, 6521, 19563, 32605

Step-4: Factors of 97830

List of positive integer factors of 97830 that divides 97815 without a remainder.

1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 1087, 2174, 3261, 5435, 6522, 9783, 10870, 16305, 19566, 32610, 48915

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 97815 and 97830. The biggest common factor number is the GCF number.
So the greatest common factor 97815 and 97830 is 15.

Also check out the Least Common Multiple of 97815 and 97830