What is the Greatest Common Factor of 2155 and 2175?

Greatest common factor (GCF) of 2155 and 2175 is 5.

GCF(2155,2175) = 5

We will now calculate the prime factors of 2155 and 2175, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 2155 and 2175.

How to find the GCF of 2155 and 2175?

We will first find the prime factorization of 2155 and 2175. After we will calculate the factors of 2155 and 2175 and find the biggest common factor number .

Step-1: Prime Factorization of 2155

Prime factors of 2155 are 5, 431. Prime factorization of 2155 in exponential form is:

2155 = 5¹ × 431¹

Step-2: Prime Factorization of 2175

Prime factors of 2175 are 3, 5, 29. Prime factorization of 2175 in exponential form is:

2175 = 3¹ × 5² × 29¹

Step-3: Factors of 2155

List of positive integer factors of 2155 that divides 2155 without a remainder.

1, 5, 431

Step-4: Factors of 2175

List of positive integer factors of 2175 that divides 2155 without a remainder.

1, 3, 5, 15, 25, 29, 75, 87, 145, 435, 725

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 2155 and 2175. The biggest common factor number is the GCF number.
So the greatest common factor 2155 and 2175 is 5.

Also check out the Least Common Multiple of 2155 and 2175