What is the Greatest Common Factor of 687 and 695?

Greatest common factor (GCF) of 687 and 695 is 1.

GCF(687,695) = 1

We will now calculate the prime factors of 687 and 695, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 687 and 695.

How to find the GCF of 687 and 695?

We will first find the prime factorization of 687 and 695. After we will calculate the factors of 687 and 695 and find the biggest common factor number .

Step-1: Prime Factorization of 687

Prime factors of 687 are 3, 229. Prime factorization of 687 in exponential form is:

687 = 3¹ × 229¹

Step-2: Prime Factorization of 695

Prime factors of 695 are 5, 139. Prime factorization of 695 in exponential form is:

695 = 5¹ × 139¹

Step-3: Factors of 687

List of positive integer factors of 687 that divides 687 without a remainder.

1, 3, 229

Step-4: Factors of 695

List of positive integer factors of 695 that divides 687 without a remainder.

1, 5, 139

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 687 and 695. The biggest common factor number is the GCF number.
So the greatest common factor 687 and 695 is 1.

Also check out the Least Common Multiple of 687 and 695