What is the Greatest Common Factor of 42942 and 42951?

Greatest common factor (GCF) of 42942 and 42951 is 3.

GCF(42942,42951) = 3

We will now calculate the prime factors of 42942 and 42951, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 42942 and 42951.

How to find the GCF of 42942 and 42951?

We will first find the prime factorization of 42942 and 42951. After we will calculate the factors of 42942 and 42951 and find the biggest common factor number .

Step-1: Prime Factorization of 42942

Prime factors of 42942 are 2, 3, 17, 421. Prime factorization of 42942 in exponential form is:

42942 = 2¹ × 3¹ × 17¹ × 421¹

Step-2: Prime Factorization of 42951

Prime factors of 42951 are 3, 103, 139. Prime factorization of 42951 in exponential form is:

42951 = 3¹ × 103¹ × 139¹

Step-3: Factors of 42942

List of positive integer factors of 42942 that divides 42942 without a remainder.

1, 2, 3, 6, 17, 34, 51, 102, 421, 842, 1263, 2526, 7157, 14314, 21471

Step-4: Factors of 42951

List of positive integer factors of 42951 that divides 42942 without a remainder.

1, 3, 103, 139, 309, 417, 14317

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 42942 and 42951. The biggest common factor number is the GCF number.
So the greatest common factor 42942 and 42951 is 3.

Also check out the Least Common Multiple of 42942 and 42951