What is the Greatest Common Factor of 81646 and 81660?

Greatest common factor (GCF) of 81646 and 81660 is 2.

GCF(81646,81660) = 2

We will now calculate the prime factors of 81646 and 81660, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 81646 and 81660.

How to find the GCF of 81646 and 81660?

We will first find the prime factorization of 81646 and 81660. After we will calculate the factors of 81646 and 81660 and find the biggest common factor number .

Step-1: Prime Factorization of 81646

Prime factors of 81646 are 2, 40823. Prime factorization of 81646 in exponential form is:

81646 = 2¹ × 40823¹

Step-2: Prime Factorization of 81660

Prime factors of 81660 are 2, 3, 5, 1361. Prime factorization of 81660 in exponential form is:

81660 = 2² × 3¹ × 5¹ × 1361¹

Step-3: Factors of 81646

List of positive integer factors of 81646 that divides 81646 without a remainder.

1, 2, 40823

Step-4: Factors of 81660

List of positive integer factors of 81660 that divides 81646 without a remainder.

1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 1361, 2722, 4083, 5444, 6805, 8166, 13610, 16332, 20415, 27220, 40830

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 81646 and 81660. The biggest common factor number is the GCF number.
So the greatest common factor 81646 and 81660 is 2.

Also check out the Least Common Multiple of 81646 and 81660