What is the Greatest Common Factor of 40640 and 40655?

Greatest common factor (GCF) of 40640 and 40655 is 5.

GCF(40640,40655) = 5

We will now calculate the prime factors of 40640 and 40655, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 40640 and 40655.

How to find the GCF of 40640 and 40655?

We will first find the prime factorization of 40640 and 40655. After we will calculate the factors of 40640 and 40655 and find the biggest common factor number .

Step-1: Prime Factorization of 40640

Prime factors of 40640 are 2, 5, 127. Prime factorization of 40640 in exponential form is:

40640 = 2⁶ × 5¹ × 127¹

Step-2: Prime Factorization of 40655

Prime factors of 40655 are 5, 47, 173. Prime factorization of 40655 in exponential form is:

40655 = 5¹ × 47¹ × 173¹

Step-3: Factors of 40640

List of positive integer factors of 40640 that divides 40640 without a remainder.

1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 127, 160, 254, 320, 508, 635, 1016, 1270, 2032, 2540, 4064, 5080, 8128, 10160, 20320

Step-4: Factors of 40655

List of positive integer factors of 40655 that divides 40640 without a remainder.

1, 5, 47, 173, 235, 865, 8131

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 40640 and 40655. The biggest common factor number is the GCF number.
So the greatest common factor 40640 and 40655 is 5.

Also check out the Least Common Multiple of 40640 and 40655