What is the Greatest Common Factor of 1585 and 1591?

Greatest common factor (GCF) of 1585 and 1591 is 1.

GCF(1585,1591) = 1

We will now calculate the prime factors of 1585 and 1591, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 1585 and 1591.

How to find the GCF of 1585 and 1591?

We will first find the prime factorization of 1585 and 1591. After we will calculate the factors of 1585 and 1591 and find the biggest common factor number .

Step-1: Prime Factorization of 1585

Prime factors of 1585 are 5, 317. Prime factorization of 1585 in exponential form is:

1585 = 5¹ × 317¹

Step-2: Prime Factorization of 1591

Prime factors of 1591 are 37, 43. Prime factorization of 1591 in exponential form is:

1591 = 37¹ × 43¹

Step-3: Factors of 1585

List of positive integer factors of 1585 that divides 1585 without a remainder.

1, 5, 317

Step-4: Factors of 1591

List of positive integer factors of 1591 that divides 1585 without a remainder.

1, 37, 43

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 1585 and 1591. The biggest common factor number is the GCF number.
So the greatest common factor 1585 and 1591 is 1.

Also check out the Least Common Multiple of 1585 and 1591