What is the Greatest Common Factor of 78990 and 78995?

Greatest common factor (GCF) of 78990 and 78995 is 5.

GCF(78990,78995) = 5

We will now calculate the prime factors of 78990 and 78995, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 78990 and 78995.

How to find the GCF of 78990 and 78995?

We will first find the prime factorization of 78990 and 78995. After we will calculate the factors of 78990 and 78995 and find the biggest common factor number .

Step-1: Prime Factorization of 78990

Prime factors of 78990 are 2, 3, 5, 2633. Prime factorization of 78990 in exponential form is:

78990 = 2¹ × 3¹ × 5¹ × 2633¹

Step-2: Prime Factorization of 78995

Prime factors of 78995 are 5, 7, 37, 61. Prime factorization of 78995 in exponential form is:

78995 = 5¹ × 7¹ × 37¹ × 61¹

Step-3: Factors of 78990

List of positive integer factors of 78990 that divides 78990 without a remainder.

1, 2, 3, 5, 6, 10, 15, 30, 2633, 5266, 7899, 13165, 15798, 26330, 39495

Step-4: Factors of 78995

List of positive integer factors of 78995 that divides 78990 without a remainder.

1, 5, 7, 35, 37, 61, 185, 259, 305, 427, 1295, 2135, 2257, 11285, 15799

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 78990 and 78995. The biggest common factor number is the GCF number.
So the greatest common factor 78990 and 78995 is 5.

Also check out the Least Common Multiple of 78990 and 78995