What is the Greatest Common Factor of 2445 and 2451?

Greatest common factor (GCF) of 2445 and 2451 is 3.

GCF(2445,2451) = 3

We will now calculate the prime factors of 2445 and 2451, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 2445 and 2451.

How to find the GCF of 2445 and 2451?

We will first find the prime factorization of 2445 and 2451. After we will calculate the factors of 2445 and 2451 and find the biggest common factor number .

Step-1: Prime Factorization of 2445

Prime factors of 2445 are 3, 5, 163. Prime factorization of 2445 in exponential form is:

2445 = 3¹ × 5¹ × 163¹

Step-2: Prime Factorization of 2451

Prime factors of 2451 are 3, 19, 43. Prime factorization of 2451 in exponential form is:

2451 = 3¹ × 19¹ × 43¹

Step-3: Factors of 2445

List of positive integer factors of 2445 that divides 2445 without a remainder.

1, 3, 5, 15, 163, 489, 815

Step-4: Factors of 2451

List of positive integer factors of 2451 that divides 2445 without a remainder.

1, 3, 19, 43, 57, 129, 817

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 2445 and 2451. The biggest common factor number is the GCF number.
So the greatest common factor 2445 and 2451 is 3.

Also check out the Least Common Multiple of 2445 and 2451