What is the Greatest Common Factor of 78205 and 78221?

Greatest common factor (GCF) of 78205 and 78221 is 1.

GCF(78205,78221) = 1

We will now calculate the prime factors of 78205 and 78221, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 78205 and 78221.

How to find the GCF of 78205 and 78221?

We will first find the prime factorization of 78205 and 78221. After we will calculate the factors of 78205 and 78221 and find the biggest common factor number .

Step-1: Prime Factorization of 78205

Prime factors of 78205 are 5, 15641. Prime factorization of 78205 in exponential form is:

78205 = 5¹ × 15641¹

Step-2: Prime Factorization of 78221

Prime factors of 78221 are 11, 13, 547. Prime factorization of 78221 in exponential form is:

78221 = 11¹ × 13¹ × 547¹

Step-3: Factors of 78205

List of positive integer factors of 78205 that divides 78205 without a remainder.

1, 5, 15641

Step-4: Factors of 78221

List of positive integer factors of 78221 that divides 78205 without a remainder.

1, 11, 13, 143, 547, 6017, 7111

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 78205 and 78221. The biggest common factor number is the GCF number.
So the greatest common factor 78205 and 78221 is 1.

Also check out the Least Common Multiple of 78205 and 78221