What is the Greatest Common Factor of 77438 and 77457?

Greatest common factor (GCF) of 77438 and 77457 is 1.

GCF(77438,77457) = 1

We will now calculate the prime factors of 77438 and 77457, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 77438 and 77457.

How to find the GCF of 77438 and 77457?

We will first find the prime factorization of 77438 and 77457. After we will calculate the factors of 77438 and 77457 and find the biggest common factor number .

Step-1: Prime Factorization of 77438

Prime factors of 77438 are 2, 31, 1249. Prime factorization of 77438 in exponential form is:

77438 = 2¹ × 31¹ × 1249¹

Step-2: Prime Factorization of 77457

Prime factors of 77457 are 3, 25819. Prime factorization of 77457 in exponential form is:

77457 = 3¹ × 25819¹

Step-3: Factors of 77438

List of positive integer factors of 77438 that divides 77438 without a remainder.

1, 2, 31, 62, 1249, 2498, 38719

Step-4: Factors of 77457

List of positive integer factors of 77457 that divides 77438 without a remainder.

1, 3, 25819

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 77438 and 77457. The biggest common factor number is the GCF number.
So the greatest common factor 77438 and 77457 is 1.

Also check out the Least Common Multiple of 77438 and 77457