What is the Greatest Common Factor of 7861 and 7875?

Greatest common factor (GCF) of 7861 and 7875 is 7.

GCF(7861,7875) = 7

We will now calculate the prime factors of 7861 and 7875, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 7861 and 7875.

How to find the GCF of 7861 and 7875?

We will first find the prime factorization of 7861 and 7875. After we will calculate the factors of 7861 and 7875 and find the biggest common factor number .

Step-1: Prime Factorization of 7861

Prime factors of 7861 are 7, 1123. Prime factorization of 7861 in exponential form is:

7861 = 7¹ × 1123¹

Step-2: Prime Factorization of 7875

Prime factors of 7875 are 3, 5, 7. Prime factorization of 7875 in exponential form is:

7875 = 3² × 5³ × 7¹

Step-3: Factors of 7861

List of positive integer factors of 7861 that divides 7861 without a remainder.

1, 7, 1123

Step-4: Factors of 7875

List of positive integer factors of 7875 that divides 7861 without a remainder.

1, 3, 5, 7, 9, 15, 21, 25, 35, 45, 63, 75, 105, 125, 175, 225, 315, 375, 525, 875, 1125, 1575, 2625

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 7861 and 7875. The biggest common factor number is the GCF number.
So the greatest common factor 7861 and 7875 is 7.

Also check out the Least Common Multiple of 7861 and 7875