What is the Greatest Common Factor of 20355 and 20365?

Greatest common factor (GCF) of 20355 and 20365 is 5.

GCF(20355,20365) = 5

We will now calculate the prime factors of 20355 and 20365, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20355 and 20365.

How to find the GCF of 20355 and 20365?

We will first find the prime factorization of 20355 and 20365. After we will calculate the factors of 20355 and 20365 and find the biggest common factor number .

Step-1: Prime Factorization of 20355

Prime factors of 20355 are 3, 5, 23, 59. Prime factorization of 20355 in exponential form is:

20355 = 3¹ × 5¹ × 23¹ × 59¹

Step-2: Prime Factorization of 20365

Prime factors of 20365 are 5, 4073. Prime factorization of 20365 in exponential form is:

20365 = 5¹ × 4073¹

Step-3: Factors of 20355

List of positive integer factors of 20355 that divides 20355 without a remainder.

1, 3, 5, 15, 23, 59, 69, 115, 177, 295, 345, 885, 1357, 4071, 6785

Step-4: Factors of 20365

List of positive integer factors of 20365 that divides 20355 without a remainder.

1, 5, 4073

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20355 and 20365. The biggest common factor number is the GCF number.
So the greatest common factor 20355 and 20365 is 5.

Also check out the Least Common Multiple of 20355 and 20365