What is the Greatest Common Factor of 2775 and 2781?

Greatest common factor (GCF) of 2775 and 2781 is 3.

GCF(2775,2781) = 3

We will now calculate the prime factors of 2775 and 2781, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 2775 and 2781.

How to find the GCF of 2775 and 2781?

We will first find the prime factorization of 2775 and 2781. After we will calculate the factors of 2775 and 2781 and find the biggest common factor number .

Step-1: Prime Factorization of 2775

Prime factors of 2775 are 3, 5, 37. Prime factorization of 2775 in exponential form is:

2775 = 3¹ × 5² × 37¹

Step-2: Prime Factorization of 2781

Prime factors of 2781 are 3, 103. Prime factorization of 2781 in exponential form is:

2781 = 3³ × 103¹

Step-3: Factors of 2775

List of positive integer factors of 2775 that divides 2775 without a remainder.

1, 3, 5, 15, 25, 37, 75, 111, 185, 555, 925

Step-4: Factors of 2781

List of positive integer factors of 2781 that divides 2775 without a remainder.

1, 3, 9, 27, 103, 309, 927

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 2775 and 2781. The biggest common factor number is the GCF number.
So the greatest common factor 2775 and 2781 is 3.

Also check out the Least Common Multiple of 2775 and 2781