What is the Greatest Common Factor of 61640 and 61645?

Greatest common factor (GCF) of 61640 and 61645 is 5.

GCF(61640,61645) = 5

We will now calculate the prime factors of 61640 and 61645, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 61640 and 61645.

How to find the GCF of 61640 and 61645?

We will first find the prime factorization of 61640 and 61645. After we will calculate the factors of 61640 and 61645 and find the biggest common factor number .

Step-1: Prime Factorization of 61640

Prime factors of 61640 are 2, 5, 23, 67. Prime factorization of 61640 in exponential form is:

61640 = 2³ × 5¹ × 23¹ × 67¹

Step-2: Prime Factorization of 61645

Prime factors of 61645 are 5, 12329. Prime factorization of 61645 in exponential form is:

61645 = 5¹ × 12329¹

Step-3: Factors of 61640

List of positive integer factors of 61640 that divides 61640 without a remainder.

1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 67, 92, 115, 134, 184, 230, 268, 335, 460, 536, 670, 920, 1340, 1541, 2680, 3082, 6164, 7705, 12328, 15410, 30820

Step-4: Factors of 61645

List of positive integer factors of 61645 that divides 61640 without a remainder.

1, 5, 12329

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 61640 and 61645. The biggest common factor number is the GCF number.
So the greatest common factor 61640 and 61645 is 5.

Also check out the Least Common Multiple of 61640 and 61645