What is the Greatest Common Factor of 78330 and 78345?

Greatest common factor (GCF) of 78330 and 78345 is 15.

GCF(78330,78345) = 15

We will now calculate the prime factors of 78330 and 78345, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 78330 and 78345.

How to find the GCF of 78330 and 78345?

We will first find the prime factorization of 78330 and 78345. After we will calculate the factors of 78330 and 78345 and find the biggest common factor number .

Step-1: Prime Factorization of 78330

Prime factors of 78330 are 2, 3, 5, 7, 373. Prime factorization of 78330 in exponential form is:

78330 = 2¹ × 3¹ × 5¹ × 7¹ × 373¹

Step-2: Prime Factorization of 78345

Prime factors of 78345 are 3, 5, 1741. Prime factorization of 78345 in exponential form is:

78345 = 3² × 5¹ × 1741¹

Step-3: Factors of 78330

List of positive integer factors of 78330 that divides 78330 without a remainder.

1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 373, 746, 1119, 1865, 2238, 2611, 3730, 5222, 5595, 7833, 11190, 13055, 15666, 26110, 39165

Step-4: Factors of 78345

List of positive integer factors of 78345 that divides 78330 without a remainder.

1, 3, 5, 9, 15, 45, 1741, 5223, 8705, 15669, 26115

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 78330 and 78345. The biggest common factor number is the GCF number.
So the greatest common factor 78330 and 78345 is 15.

Also check out the Least Common Multiple of 78330 and 78345