What is the Greatest Common Factor of 81485 and 81505?

Greatest common factor (GCF) of 81485 and 81505 is 5.

GCF(81485,81505) = 5

We will now calculate the prime factors of 81485 and 81505, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 81485 and 81505.

How to find the GCF of 81485 and 81505?

We will first find the prime factorization of 81485 and 81505. After we will calculate the factors of 81485 and 81505 and find the biggest common factor number .

Step-1: Prime Factorization of 81485

Prime factors of 81485 are 5, 43, 379. Prime factorization of 81485 in exponential form is:

81485 = 5¹ × 43¹ × 379¹

Step-2: Prime Factorization of 81505

Prime factors of 81505 are 5, 16301. Prime factorization of 81505 in exponential form is:

81505 = 5¹ × 16301¹

Step-3: Factors of 81485

List of positive integer factors of 81485 that divides 81485 without a remainder.

1, 5, 43, 215, 379, 1895, 16297

Step-4: Factors of 81505

List of positive integer factors of 81505 that divides 81485 without a remainder.

1, 5, 16301

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 81485 and 81505. The biggest common factor number is the GCF number.
So the greatest common factor 81485 and 81505 is 5.

Also check out the Least Common Multiple of 81485 and 81505