What is the Greatest Common Factor of 1531 and 1551?

Greatest common factor (GCF) of 1531 and 1551 is 1.

GCF(1531,1551) = 1

We will now calculate the prime factors of 1531 and 1551, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 1531 and 1551.

How to find the GCF of 1531 and 1551?

We will first find the prime factorization of 1531 and 1551. After we will calculate the factors of 1531 and 1551 and find the biggest common factor number .

Step-1: Prime Factorization of 1531

Prime factors of 1531 are 1531. Prime factorization of 1531 in exponential form is:

1531 = 1531¹

Step-2: Prime Factorization of 1551

Prime factors of 1551 are 3, 11, 47. Prime factorization of 1551 in exponential form is:

1551 = 3¹ × 11¹ × 47¹

Step-3: Factors of 1531

List of positive integer factors of 1531 that divides 1531 without a remainder.

Step-4: Factors of 1551

List of positive integer factors of 1551 that divides 1531 without a remainder.

1, 3, 11, 33, 47, 141, 517

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 1531 and 1551. The biggest common factor number is the GCF number.
So the greatest common factor 1531 and 1551 is 1.

Also check out the Least Common Multiple of 1531 and 1551