What is the Greatest Common Factor of 202 and 215?

Greatest common factor (GCF) of 202 and 215 is 1.

GCF(202,215) = 1

We will now calculate the prime factors of 202 and 215, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 202 and 215.

How to find the GCF of 202 and 215?

We will first find the prime factorization of 202 and 215. After we will calculate the factors of 202 and 215 and find the biggest common factor number .

Step-1: Prime Factorization of 202

Prime factors of 202 are 2, 101. Prime factorization of 202 in exponential form is:

202 = 2¹ × 101¹

Step-2: Prime Factorization of 215

Prime factors of 215 are 5, 43. Prime factorization of 215 in exponential form is:

215 = 5¹ × 43¹

Step-3: Factors of 202

List of positive integer factors of 202 that divides 202 without a remainder.

1, 2, 101

Step-4: Factors of 215

List of positive integer factors of 215 that divides 202 without a remainder.

1, 5, 43

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 202 and 215. The biggest common factor number is the GCF number.
So the greatest common factor 202 and 215 is 1.

Also check out the Least Common Multiple of 202 and 215