What is the Greatest Common Factor of 61243 and 61257?

Greatest common factor (GCF) of 61243 and 61257 is 7.

GCF(61243,61257) = 7

We will now calculate the prime factors of 61243 and 61257, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 61243 and 61257.

How to find the GCF of 61243 and 61257?

We will first find the prime factorization of 61243 and 61257. After we will calculate the factors of 61243 and 61257 and find the biggest common factor number .

Step-1: Prime Factorization of 61243

Prime factors of 61243 are 7, 13, 673. Prime factorization of 61243 in exponential form is:

61243 = 7¹ × 13¹ × 673¹

Step-2: Prime Factorization of 61257

Prime factors of 61257 are 3, 7, 2917. Prime factorization of 61257 in exponential form is:

61257 = 3¹ × 7¹ × 2917¹

Step-3: Factors of 61243

List of positive integer factors of 61243 that divides 61243 without a remainder.

1, 7, 13, 91, 673, 4711, 8749

Step-4: Factors of 61257

List of positive integer factors of 61257 that divides 61243 without a remainder.

1, 3, 7, 21, 2917, 8751, 20419

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 61243 and 61257. The biggest common factor number is the GCF number.
So the greatest common factor 61243 and 61257 is 7.

Also check out the Least Common Multiple of 61243 and 61257