What is the Greatest Common Factor of 81490 and 81506?

Greatest common factor (GCF) of 81490 and 81506 is 2.

GCF(81490,81506) = 2

We will now calculate the prime factors of 81490 and 81506, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 81490 and 81506.

How to find the GCF of 81490 and 81506?

We will first find the prime factorization of 81490 and 81506. After we will calculate the factors of 81490 and 81506 and find the biggest common factor number .

Step-1: Prime Factorization of 81490

Prime factors of 81490 are 2, 5, 29, 281. Prime factorization of 81490 in exponential form is:

81490 = 2¹ × 5¹ × 29¹ × 281¹

Step-2: Prime Factorization of 81506

Prime factors of 81506 are 2, 83, 491. Prime factorization of 81506 in exponential form is:

81506 = 2¹ × 83¹ × 491¹

Step-3: Factors of 81490

List of positive integer factors of 81490 that divides 81490 without a remainder.

1, 2, 5, 10, 29, 58, 145, 281, 290, 562, 1405, 2810, 8149, 16298, 40745

Step-4: Factors of 81506

List of positive integer factors of 81506 that divides 81490 without a remainder.

1, 2, 83, 166, 491, 982, 40753

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 81490 and 81506. The biggest common factor number is the GCF number.
So the greatest common factor 81490 and 81506 is 2.

Also check out the Least Common Multiple of 81490 and 81506