What is the Greatest Common Factor of 8420 and 8424?

Greatest common factor (GCF) of 8420 and 8424 is 4.

GCF(8420,8424) = 4

We will now calculate the prime factors of 8420 and 8424, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 8420 and 8424.

How to find the GCF of 8420 and 8424?

We will first find the prime factorization of 8420 and 8424. After we will calculate the factors of 8420 and 8424 and find the biggest common factor number .

Step-1: Prime Factorization of 8420

Prime factors of 8420 are 2, 5, 421. Prime factorization of 8420 in exponential form is:

8420 = 2² × 5¹ × 421¹

Step-2: Prime Factorization of 8424

Prime factors of 8424 are 2, 3, 13. Prime factorization of 8424 in exponential form is:

8424 = 2³ × 3⁴ × 13¹

Step-3: Factors of 8420

List of positive integer factors of 8420 that divides 8420 without a remainder.

1, 2, 4, 5, 10, 20, 421, 842, 1684, 2105, 4210

Step-4: Factors of 8424

List of positive integer factors of 8424 that divides 8420 without a remainder.

1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 27, 36, 39, 52, 54, 72, 78, 81, 104, 108, 117, 156, 162, 216, 234, 312, 324, 351, 468, 648, 702, 936, 1053, 1404, 2106, 2808, 4212

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 8420 and 8424. The biggest common factor number is the GCF number.
So the greatest common factor 8420 and 8424 is 4.

Also check out the Least Common Multiple of 8420 and 8424