What is the Greatest Common Factor of 42141 and 42156?

Greatest common factor (GCF) of 42141 and 42156 is 3.

GCF(42141,42156) = 3

We will now calculate the prime factors of 42141 and 42156, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 42141 and 42156.

How to find the GCF of 42141 and 42156?

We will first find the prime factorization of 42141 and 42156. After we will calculate the factors of 42141 and 42156 and find the biggest common factor number .

Step-1: Prime Factorization of 42141

Prime factors of 42141 are 3, 11, 1277. Prime factorization of 42141 in exponential form is:

42141 = 3¹ × 11¹ × 1277¹

Step-2: Prime Factorization of 42156

Prime factors of 42156 are 2, 3, 1171. Prime factorization of 42156 in exponential form is:

42156 = 2² × 3² × 1171¹

Step-3: Factors of 42141

List of positive integer factors of 42141 that divides 42141 without a remainder.

1, 3, 11, 33, 1277, 3831, 14047

Step-4: Factors of 42156

List of positive integer factors of 42156 that divides 42141 without a remainder.

1, 2, 3, 4, 6, 9, 12, 18, 36, 1171, 2342, 3513, 4684, 7026, 10539, 14052, 21078

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 42141 and 42156. The biggest common factor number is the GCF number.
So the greatest common factor 42141 and 42156 is 3.

Also check out the Least Common Multiple of 42141 and 42156