What is the Greatest Common Factor of 81538 and 81542?

Greatest common factor (GCF) of 81538 and 81542 is 2.

GCF(81538,81542) = 2

We will now calculate the prime factors of 81538 and 81542, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 81538 and 81542.

How to find the GCF of 81538 and 81542?

We will first find the prime factorization of 81538 and 81542. After we will calculate the factors of 81538 and 81542 and find the biggest common factor number .

Step-1: Prime Factorization of 81538

Prime factors of 81538 are 2, 59, 691. Prime factorization of 81538 in exponential form is:

81538 = 2¹ × 59¹ × 691¹

Step-2: Prime Factorization of 81542

Prime factors of 81542 are 2, 40771. Prime factorization of 81542 in exponential form is:

81542 = 2¹ × 40771¹

Step-3: Factors of 81538

List of positive integer factors of 81538 that divides 81538 without a remainder.

1, 2, 59, 118, 691, 1382, 40769

Step-4: Factors of 81542

List of positive integer factors of 81542 that divides 81538 without a remainder.

1, 2, 40771

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 81538 and 81542. The biggest common factor number is the GCF number.
So the greatest common factor 81538 and 81542 is 2.

Also check out the Least Common Multiple of 81538 and 81542