What is the Greatest Common Factor of 78930 and 78945?

Greatest common factor (GCF) of 78930 and 78945 is 15.

GCF(78930,78945) = 15

We will now calculate the prime factors of 78930 and 78945, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 78930 and 78945.

How to find the GCF of 78930 and 78945?

We will first find the prime factorization of 78930 and 78945. After we will calculate the factors of 78930 and 78945 and find the biggest common factor number .

Step-1: Prime Factorization of 78930

Prime factors of 78930 are 2, 3, 5, 877. Prime factorization of 78930 in exponential form is:

78930 = 2¹ × 3² × 5¹ × 877¹

Step-2: Prime Factorization of 78945

Prime factors of 78945 are 3, 5, 19, 277. Prime factorization of 78945 in exponential form is:

78945 = 3¹ × 5¹ × 19¹ × 277¹

Step-3: Factors of 78930

List of positive integer factors of 78930 that divides 78930 without a remainder.

1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 877, 1754, 2631, 4385, 5262, 7893, 8770, 13155, 15786, 26310, 39465

Step-4: Factors of 78945

List of positive integer factors of 78945 that divides 78930 without a remainder.

1, 3, 5, 15, 19, 57, 95, 277, 285, 831, 1385, 4155, 5263, 15789, 26315

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 78930 and 78945. The biggest common factor number is the GCF number.
So the greatest common factor 78930 and 78945 is 15.

Also check out the Least Common Multiple of 78930 and 78945