What is the Greatest Common Factor of 68243 and 68257?

Greatest common factor (GCF) of 68243 and 68257 is 7.

GCF(68243,68257) = 7

We will now calculate the prime factors of 68243 and 68257, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 68243 and 68257.

How to find the GCF of 68243 and 68257?

We will first find the prime factorization of 68243 and 68257. After we will calculate the factors of 68243 and 68257 and find the biggest common factor number .

Step-1: Prime Factorization of 68243

Prime factors of 68243 are 7, 9749. Prime factorization of 68243 in exponential form is:

68243 = 7¹ × 9749¹

Step-2: Prime Factorization of 68257

Prime factors of 68257 are 7, 199. Prime factorization of 68257 in exponential form is:

68257 = 7³ × 199¹

Step-3: Factors of 68243

List of positive integer factors of 68243 that divides 68243 without a remainder.

1, 7, 9749

Step-4: Factors of 68257

List of positive integer factors of 68257 that divides 68243 without a remainder.

1, 7, 49, 199, 343, 1393, 9751

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 68243 and 68257. The biggest common factor number is the GCF number.
So the greatest common factor 68243 and 68257 is 7.

Also check out the Least Common Multiple of 68243 and 68257