What is the Greatest Common Factor of 2840 and 2860?

Greatest common factor (GCF) of 2840 and 2860 is 20.

GCF(2840,2860) = 20

We will now calculate the prime factors of 2840 and 2860, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 2840 and 2860.

How to find the GCF of 2840 and 2860?

We will first find the prime factorization of 2840 and 2860. After we will calculate the factors of 2840 and 2860 and find the biggest common factor number .

Step-1: Prime Factorization of 2840

Prime factors of 2840 are 2, 5, 71. Prime factorization of 2840 in exponential form is:

2840 = 2³ × 5¹ × 71¹

Step-2: Prime Factorization of 2860

Prime factors of 2860 are 2, 5, 11, 13. Prime factorization of 2860 in exponential form is:

2860 = 2² × 5¹ × 11¹ × 13¹

Step-3: Factors of 2840

List of positive integer factors of 2840 that divides 2840 without a remainder.

1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420

Step-4: Factors of 2860

List of positive integer factors of 2860 that divides 2840 without a remainder.

1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 260, 286, 572, 715, 1430

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 2840 and 2860. The biggest common factor number is the GCF number.
So the greatest common factor 2840 and 2860 is 20.

Also check out the Least Common Multiple of 2840 and 2860