What is the Greatest Common Factor of 81808 and 81812?

Greatest common factor (GCF) of 81808 and 81812 is 4.

GCF(81808,81812) = 4

We will now calculate the prime factors of 81808 and 81812, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 81808 and 81812.

How to find the GCF of 81808 and 81812?

We will first find the prime factorization of 81808 and 81812. After we will calculate the factors of 81808 and 81812 and find the biggest common factor number .

Step-1: Prime Factorization of 81808

Prime factors of 81808 are 2, 5113. Prime factorization of 81808 in exponential form is:

81808 = 2⁴ × 5113¹

Step-2: Prime Factorization of 81812

Prime factors of 81812 are 2, 113, 181. Prime factorization of 81812 in exponential form is:

81812 = 2² × 113¹ × 181¹

Step-3: Factors of 81808

List of positive integer factors of 81808 that divides 81808 without a remainder.

1, 2, 4, 8, 16, 5113, 10226, 20452, 40904

Step-4: Factors of 81812

List of positive integer factors of 81812 that divides 81808 without a remainder.

1, 2, 4, 113, 181, 226, 362, 452, 724, 20453, 40906

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 81808 and 81812. The biggest common factor number is the GCF number.
So the greatest common factor 81808 and 81812 is 4.

Also check out the Least Common Multiple of 81808 and 81812