What is the Greatest Common Factor of 1491 and 1511?

Greatest common factor (GCF) of 1491 and 1511 is 1.

GCF(1491,1511) = 1

We will now calculate the prime factors of 1491 and 1511, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 1491 and 1511.

How to find the GCF of 1491 and 1511?

We will first find the prime factorization of 1491 and 1511. After we will calculate the factors of 1491 and 1511 and find the biggest common factor number .

Step-1: Prime Factorization of 1491

Prime factors of 1491 are 3, 7, 71. Prime factorization of 1491 in exponential form is:

1491 = 3¹ × 7¹ × 71¹

Step-2: Prime Factorization of 1511

Prime factors of 1511 are 1511. Prime factorization of 1511 in exponential form is:

1511 = 1511¹

Step-3: Factors of 1491

List of positive integer factors of 1491 that divides 1491 without a remainder.

1, 3, 7, 21, 71, 213, 497

Step-4: Factors of 1511

List of positive integer factors of 1511 that divides 1491 without a remainder.

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 1491 and 1511. The biggest common factor number is the GCF number.
So the greatest common factor 1491 and 1511 is 1.

Also check out the Least Common Multiple of 1491 and 1511