What is the Greatest Common Factor of 77845 and 77860?

Greatest common factor (GCF) of 77845 and 77860 is 5.

GCF(77845,77860) = 5

We will now calculate the prime factors of 77845 and 77860, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 77845 and 77860.

How to find the GCF of 77845 and 77860?

We will first find the prime factorization of 77845 and 77860. After we will calculate the factors of 77845 and 77860 and find the biggest common factor number .

Step-1: Prime Factorization of 77845

Prime factors of 77845 are 5, 15569. Prime factorization of 77845 in exponential form is:

77845 = 5¹ × 15569¹

Step-2: Prime Factorization of 77860

Prime factors of 77860 are 2, 5, 17, 229. Prime factorization of 77860 in exponential form is:

77860 = 2² × 5¹ × 17¹ × 229¹

Step-3: Factors of 77845

List of positive integer factors of 77845 that divides 77845 without a remainder.

1, 5, 15569

Step-4: Factors of 77860

List of positive integer factors of 77860 that divides 77845 without a remainder.

1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 229, 340, 458, 916, 1145, 2290, 3893, 4580, 7786, 15572, 19465, 38930

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 77845 and 77860. The biggest common factor number is the GCF number.
So the greatest common factor 77845 and 77860 is 5.

Also check out the Least Common Multiple of 77845 and 77860