What is the Greatest Common Factor of 77221 and 77228?

Greatest common factor (GCF) of 77221 and 77228 is 1.

GCF(77221,77228) = 1

We will now calculate the prime factors of 77221 and 77228, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 77221 and 77228.

How to find the GCF of 77221 and 77228?

We will first find the prime factorization of 77221 and 77228. After we will calculate the factors of 77221 and 77228 and find the biggest common factor number .

Step-1: Prime Factorization of 77221

Prime factors of 77221 are 31, 47, 53. Prime factorization of 77221 in exponential form is:

77221 = 31¹ × 47¹ × 53¹

Step-2: Prime Factorization of 77228

Prime factors of 77228 are 2, 43, 449. Prime factorization of 77228 in exponential form is:

77228 = 2² × 43¹ × 449¹

Step-3: Factors of 77221

List of positive integer factors of 77221 that divides 77221 without a remainder.

1, 31, 47, 53, 1457, 1643, 2491

Step-4: Factors of 77228

List of positive integer factors of 77228 that divides 77221 without a remainder.

1, 2, 4, 43, 86, 172, 449, 898, 1796, 19307, 38614

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 77221 and 77228. The biggest common factor number is the GCF number.
So the greatest common factor 77221 and 77228 is 1.

Also check out the Least Common Multiple of 77221 and 77228