What is the Greatest Common Factor of 305 and 311?

Greatest common factor (GCF) of 305 and 311 is 1.

GCF(305,311) = 1

We will now calculate the prime factors of 305 and 311, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 305 and 311.

How to find the GCF of 305 and 311?

We will first find the prime factorization of 305 and 311. After we will calculate the factors of 305 and 311 and find the biggest common factor number .

Step-1: Prime Factorization of 305

Prime factors of 305 are 5, 61. Prime factorization of 305 in exponential form is:

305 = 5¹ × 61¹

Step-2: Prime Factorization of 311

Prime factors of 311 are 311. Prime factorization of 311 in exponential form is:

311 = 311¹

Step-3: Factors of 305

List of positive integer factors of 305 that divides 305 without a remainder.

1, 5, 61

Step-4: Factors of 311

List of positive integer factors of 311 that divides 305 without a remainder.

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 305 and 311. The biggest common factor number is the GCF number.
So the greatest common factor 305 and 311 is 1.

Also check out the Least Common Multiple of 305 and 311