What is the Greatest Common Factor of 3402 and 3420?

Greatest common factor (GCF) of 3402 and 3420 is 18.

GCF(3402,3420) = 18

We will now calculate the prime factors of 3402 and 3420, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 3402 and 3420.

How to find the GCF of 3402 and 3420?

We will first find the prime factorization of 3402 and 3420. After we will calculate the factors of 3402 and 3420 and find the biggest common factor number .

Step-1: Prime Factorization of 3402

Prime factors of 3402 are 2, 3, 7. Prime factorization of 3402 in exponential form is:

3402 = 2¹ × 3⁵ × 7¹

Step-2: Prime Factorization of 3420

Prime factors of 3420 are 2, 3, 5, 19. Prime factorization of 3420 in exponential form is:

3420 = 2² × 3² × 5¹ × 19¹

Step-3: Factors of 3402

List of positive integer factors of 3402 that divides 3402 without a remainder.

1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 81, 126, 162, 189, 243, 378, 486, 567, 1134, 1701

Step-4: Factors of 3420

List of positive integer factors of 3420 that divides 3402 without a remainder.

1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 114, 171, 180, 190, 228, 285, 342, 380, 570, 684, 855, 1140, 1710

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 3402 and 3420. The biggest common factor number is the GCF number.
So the greatest common factor 3402 and 3420 is 18.

Also check out the Least Common Multiple of 3402 and 3420