What is the Greatest Common Factor of 21078 and 21096?

Greatest common factor (GCF) of 21078 and 21096 is 18.

GCF(21078,21096) = 18

We will now calculate the prime factors of 21078 and 21096, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 21078 and 21096.

How to find the GCF of 21078 and 21096?

We will first find the prime factorization of 21078 and 21096. After we will calculate the factors of 21078 and 21096 and find the biggest common factor number .

Step-1: Prime Factorization of 21078

Prime factors of 21078 are 2, 3, 1171. Prime factorization of 21078 in exponential form is:

21078 = 2¹ × 3² × 1171¹

Step-2: Prime Factorization of 21096

Prime factors of 21096 are 2, 3, 293. Prime factorization of 21096 in exponential form is:

21096 = 2³ × 3² × 293¹

Step-3: Factors of 21078

List of positive integer factors of 21078 that divides 21078 without a remainder.

1, 2, 3, 6, 9, 18, 1171, 2342, 3513, 7026, 10539

Step-4: Factors of 21096

List of positive integer factors of 21096 that divides 21078 without a remainder.

1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 293, 586, 879, 1172, 1758, 2344, 2637, 3516, 5274, 7032, 10548

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 21078 and 21096. The biggest common factor number is the GCF number.
So the greatest common factor 21078 and 21096 is 18.

Also check out the Least Common Multiple of 21078 and 21096