What is the Greatest Common Factor of 22905 and 22920?

Greatest common factor (GCF) of 22905 and 22920 is 15.

GCF(22905,22920) = 15

We will now calculate the prime factors of 22905 and 22920, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 22905 and 22920.

How to find the GCF of 22905 and 22920?

We will first find the prime factorization of 22905 and 22920. After we will calculate the factors of 22905 and 22920 and find the biggest common factor number .

Step-1: Prime Factorization of 22905

Prime factors of 22905 are 3, 5, 509. Prime factorization of 22905 in exponential form is:

22905 = 3² × 5¹ × 509¹

Step-2: Prime Factorization of 22920

Prime factors of 22920 are 2, 3, 5, 191. Prime factorization of 22920 in exponential form is:

22920 = 2³ × 3¹ × 5¹ × 191¹

Step-3: Factors of 22905

List of positive integer factors of 22905 that divides 22905 without a remainder.

1, 3, 5, 9, 15, 45, 509, 1527, 2545, 4581, 7635

Step-4: Factors of 22920

List of positive integer factors of 22920 that divides 22905 without a remainder.

1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 191, 382, 573, 764, 955, 1146, 1528, 1910, 2292, 2865, 3820, 4584, 5730, 7640, 11460

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 22905 and 22920. The biggest common factor number is the GCF number.
So the greatest common factor 22905 and 22920 is 15.

Also check out the Least Common Multiple of 22905 and 22920