What is the Greatest Common Factor of 2856 and 2865?

Greatest common factor (GCF) of 2856 and 2865 is 3.

GCF(2856,2865) = 3

We will now calculate the prime factors of 2856 and 2865, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 2856 and 2865.

How to find the GCF of 2856 and 2865?

We will first find the prime factorization of 2856 and 2865. After we will calculate the factors of 2856 and 2865 and find the biggest common factor number .

Step-1: Prime Factorization of 2856

Prime factors of 2856 are 2, 3, 7, 17. Prime factorization of 2856 in exponential form is:

2856 = 2³ × 3¹ × 7¹ × 17¹

Step-2: Prime Factorization of 2865

Prime factors of 2865 are 3, 5, 191. Prime factorization of 2865 in exponential form is:

2865 = 3¹ × 5¹ × 191¹

Step-3: Factors of 2856

List of positive integer factors of 2856 that divides 2856 without a remainder.

1, 2, 3, 4, 6, 7, 8, 12, 14, 17, 21, 24, 28, 34, 42, 51, 56, 68, 84, 102, 119, 136, 168, 204, 238, 357, 408, 476, 714, 952, 1428

Step-4: Factors of 2865

List of positive integer factors of 2865 that divides 2856 without a remainder.

1, 3, 5, 15, 191, 573, 955

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 2856 and 2865. The biggest common factor number is the GCF number.
So the greatest common factor 2856 and 2865 is 3.

Also check out the Least Common Multiple of 2856 and 2865