What is the Greatest Common Factor of 77210 and 77221?

Greatest common factor (GCF) of 77210 and 77221 is 1.

GCF(77210,77221) = 1

We will now calculate the prime factors of 77210 and 77221, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 77210 and 77221.

How to find the GCF of 77210 and 77221?

We will first find the prime factorization of 77210 and 77221. After we will calculate the factors of 77210 and 77221 and find the biggest common factor number .

Step-1: Prime Factorization of 77210

Prime factors of 77210 are 2, 5, 7, 1103. Prime factorization of 77210 in exponential form is:

77210 = 2¹ × 5¹ × 7¹ × 1103¹

Step-2: 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-3: Factors of 77210

List of positive integer factors of 77210 that divides 77210 without a remainder.

1, 2, 5, 7, 10, 14, 35, 70, 1103, 2206, 5515, 7721, 11030, 15442, 38605

Step-4: Factors of 77221

List of positive integer factors of 77221 that divides 77210 without a remainder.

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

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 77210 and 77221. The biggest common factor number is the GCF number.
So the greatest common factor 77210 and 77221 is 1.

Also check out the Least Common Multiple of 77210 and 77221