What is the Greatest Common Factor of 7940 and 7945?

Greatest common factor (GCF) of 7940 and 7945 is 5.

GCF(7940,7945) = 5

We will now calculate the prime factors of 7940 and 7945, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 7940 and 7945.

How to find the GCF of 7940 and 7945?

We will first find the prime factorization of 7940 and 7945. After we will calculate the factors of 7940 and 7945 and find the biggest common factor number .

Step-1: Prime Factorization of 7940

Prime factors of 7940 are 2, 5, 397. Prime factorization of 7940 in exponential form is:

7940 = 2² × 5¹ × 397¹

Step-2: Prime Factorization of 7945

Prime factors of 7945 are 5, 7, 227. Prime factorization of 7945 in exponential form is:

7945 = 5¹ × 7¹ × 227¹

Step-3: Factors of 7940

List of positive integer factors of 7940 that divides 7940 without a remainder.

1, 2, 4, 5, 10, 20, 397, 794, 1588, 1985, 3970

Step-4: Factors of 7945

List of positive integer factors of 7945 that divides 7940 without a remainder.

1, 5, 7, 35, 227, 1135, 1589

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 7940 and 7945. The biggest common factor number is the GCF number.
So the greatest common factor 7940 and 7945 is 5.

Also check out the Least Common Multiple of 7940 and 7945