What is the Greatest Common Factor of 12840 and 12851?

Greatest common factor (GCF) of 12840 and 12851 is 1.

GCF(12840,12851) = 1

We will now calculate the prime factors of 12840 and 12851, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 12840 and 12851.

How to find the GCF of 12840 and 12851?

We will first find the prime factorization of 12840 and 12851. After we will calculate the factors of 12840 and 12851 and find the biggest common factor number .

Step-1: Prime Factorization of 12840

Prime factors of 12840 are 2, 3, 5, 107. Prime factorization of 12840 in exponential form is:

12840 = 2³ × 3¹ × 5¹ × 107¹

Step-2: Prime Factorization of 12851

Prime factors of 12851 are 71, 181. Prime factorization of 12851 in exponential form is:

12851 = 71¹ × 181¹

Step-3: Factors of 12840

List of positive integer factors of 12840 that divides 12840 without a remainder.

1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 107, 120, 214, 321, 428, 535, 642, 856, 1070, 1284, 1605, 2140, 2568, 3210, 4280, 6420

Step-4: Factors of 12851

List of positive integer factors of 12851 that divides 12840 without a remainder.

1, 71, 181

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 12840 and 12851. The biggest common factor number is the GCF number.
So the greatest common factor 12840 and 12851 is 1.

Also check out the Least Common Multiple of 12840 and 12851