What is the Greatest Common Factor of 78920 and 78925?

Greatest common factor (GCF) of 78920 and 78925 is 5.

GCF(78920,78925) = 5

We will now calculate the prime factors of 78920 and 78925, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 78920 and 78925.

How to find the GCF of 78920 and 78925?

We will first find the prime factorization of 78920 and 78925. After we will calculate the factors of 78920 and 78925 and find the biggest common factor number .

Step-1: Prime Factorization of 78920

Prime factors of 78920 are 2, 5, 1973. Prime factorization of 78920 in exponential form is:

78920 = 2³ × 5¹ × 1973¹

Step-2: Prime Factorization of 78925

Prime factors of 78925 are 5, 7, 11, 41. Prime factorization of 78925 in exponential form is:

78925 = 5² × 7¹ × 11¹ × 41¹

Step-3: Factors of 78920

List of positive integer factors of 78920 that divides 78920 without a remainder.

1, 2, 4, 5, 8, 10, 20, 40, 1973, 3946, 7892, 9865, 15784, 19730, 39460

Step-4: Factors of 78925

List of positive integer factors of 78925 that divides 78920 without a remainder.

1, 5, 7, 11, 25, 35, 41, 55, 77, 175, 205, 275, 287, 385, 451, 1025, 1435, 1925, 2255, 3157, 7175, 11275, 15785

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 78920 and 78925. The biggest common factor number is the GCF number.
So the greatest common factor 78920 and 78925 is 5.

Also check out the Least Common Multiple of 78920 and 78925