What is the Greatest Common Factor of 91203 and 91215?

Greatest common factor (GCF) of 91203 and 91215 is 3.

GCF(91203,91215) = 3

We will now calculate the prime factors of 91203 and 91215, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 91203 and 91215.

How to find the GCF of 91203 and 91215?

We will first find the prime factorization of 91203 and 91215. After we will calculate the factors of 91203 and 91215 and find the biggest common factor number .

Step-1: Prime Factorization of 91203

Prime factors of 91203 are 3, 7, 43, 101. Prime factorization of 91203 in exponential form is:

91203 = 3¹ × 7¹ × 43¹ × 101¹

Step-2: Prime Factorization of 91215

Prime factors of 91215 are 3, 5, 2027. Prime factorization of 91215 in exponential form is:

91215 = 3² × 5¹ × 2027¹

Step-3: Factors of 91203

List of positive integer factors of 91203 that divides 91203 without a remainder.

1, 3, 7, 21, 43, 101, 129, 301, 303, 707, 903, 2121, 4343, 13029, 30401

Step-4: Factors of 91215

List of positive integer factors of 91215 that divides 91203 without a remainder.

1, 3, 5, 9, 15, 45, 2027, 6081, 10135, 18243, 30405

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 91203 and 91215. The biggest common factor number is the GCF number.
So the greatest common factor 91203 and 91215 is 3.

Also check out the Least Common Multiple of 91203 and 91215