What is the Greatest Common Factor of 20907 and 20915?

Greatest common factor (GCF) of 20907 and 20915 is 1.

GCF(20907,20915) = 1

We will now calculate the prime factors of 20907 and 20915, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20907 and 20915.

How to find the GCF of 20907 and 20915?

We will first find the prime factorization of 20907 and 20915. After we will calculate the factors of 20907 and 20915 and find the biggest common factor number .

Step-1: Prime Factorization of 20907

Prime factors of 20907 are 3, 23, 101. Prime factorization of 20907 in exponential form is:

20907 = 3² × 23¹ × 101¹

Step-2: Prime Factorization of 20915

Prime factors of 20915 are 5, 47, 89. Prime factorization of 20915 in exponential form is:

20915 = 5¹ × 47¹ × 89¹

Step-3: Factors of 20907

List of positive integer factors of 20907 that divides 20907 without a remainder.

1, 3, 9, 23, 69, 101, 207, 303, 909, 2323, 6969

Step-4: Factors of 20915

List of positive integer factors of 20915 that divides 20907 without a remainder.

1, 5, 47, 89, 235, 445, 4183

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20907 and 20915. The biggest common factor number is the GCF number.
So the greatest common factor 20907 and 20915 is 1.

Also check out the Least Common Multiple of 20907 and 20915