What is the Greatest Common Factor of 81805 and 81816?

Greatest common factor (GCF) of 81805 and 81816 is 1.

GCF(81805,81816) = 1

We will now calculate the prime factors of 81805 and 81816, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 81805 and 81816.

How to find the GCF of 81805 and 81816?

We will first find the prime factorization of 81805 and 81816. After we will calculate the factors of 81805 and 81816 and find the biggest common factor number .

Step-1: Prime Factorization of 81805

Prime factors of 81805 are 5, 16361. Prime factorization of 81805 in exponential form is:

81805 = 5¹ × 16361¹

Step-2: Prime Factorization of 81816

Prime factors of 81816 are 2, 3, 7, 487. Prime factorization of 81816 in exponential form is:

81816 = 2³ × 3¹ × 7¹ × 487¹

Step-3: Factors of 81805

List of positive integer factors of 81805 that divides 81805 without a remainder.

1, 5, 16361

Step-4: Factors of 81816

List of positive integer factors of 81816 that divides 81805 without a remainder.

1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168, 487, 974, 1461, 1948, 2922, 3409, 3896, 5844, 6818, 10227, 11688, 13636, 20454, 27272, 40908

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 81805 and 81816. The biggest common factor number is the GCF number.
So the greatest common factor 81805 and 81816 is 1.

Also check out the Least Common Multiple of 81805 and 81816