What is the Greatest Common Factor of 51243 and 51255?

Greatest common factor (GCF) of 51243 and 51255 is 3.

GCF(51243,51255) = 3

We will now calculate the prime factors of 51243 and 51255, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 51243 and 51255.

How to find the GCF of 51243 and 51255?

We will first find the prime factorization of 51243 and 51255. After we will calculate the factors of 51243 and 51255 and find the biggest common factor number .

Step-1: Prime Factorization of 51243

Prime factors of 51243 are 3, 19, 29, 31. Prime factorization of 51243 in exponential form is:

51243 = 3¹ × 19¹ × 29¹ × 31¹

Step-2: Prime Factorization of 51255

Prime factors of 51255 are 3, 5, 17, 67. Prime factorization of 51255 in exponential form is:

51255 = 3² × 5¹ × 17¹ × 67¹

Step-3: Factors of 51243

List of positive integer factors of 51243 that divides 51243 without a remainder.

1, 3, 19, 29, 31, 57, 87, 93, 551, 589, 899, 1653, 1767, 2697, 17081

Step-4: Factors of 51255

List of positive integer factors of 51255 that divides 51243 without a remainder.

1, 3, 5, 9, 15, 17, 45, 51, 67, 85, 153, 201, 255, 335, 603, 765, 1005, 1139, 3015, 3417, 5695, 10251, 17085

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 51243 and 51255. The biggest common factor number is the GCF number.
So the greatest common factor 51243 and 51255 is 3.

Also check out the Least Common Multiple of 51243 and 51255