What is the Greatest Common Factor of 61221 and 61236?

Greatest common factor (GCF) of 61221 and 61236 is 3.

GCF(61221,61236) = 3

We will now calculate the prime factors of 61221 and 61236, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 61221 and 61236.

How to find the GCF of 61221 and 61236?

We will first find the prime factorization of 61221 and 61236. After we will calculate the factors of 61221 and 61236 and find the biggest common factor number .

Step-1: Prime Factorization of 61221

Prime factors of 61221 are 3, 20407. Prime factorization of 61221 in exponential form is:

61221 = 3¹ × 20407¹

Step-2: Prime Factorization of 61236

Prime factors of 61236 are 2, 3, 7. Prime factorization of 61236 in exponential form is:

61236 = 2² × 3⁷ × 7¹

Step-3: Factors of 61221

List of positive integer factors of 61221 that divides 61221 without a remainder.

1, 3, 20407

Step-4: Factors of 61236

List of positive integer factors of 61236 that divides 61221 without a remainder.

1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 81, 84, 108, 126, 162, 189, 243, 252, 324, 378, 486, 567, 729, 756, 972, 1134, 1458, 1701, 2187, 2268, 2916, 3402, 4374, 5103, 6804, 8748, 10206, 15309, 20412, 30618

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 61221 and 61236. The biggest common factor number is the GCF number.
So the greatest common factor 61221 and 61236 is 3.

Also check out the Least Common Multiple of 61221 and 61236