What is the Greatest Common Factor of 72981 and 72985?

Greatest common factor (GCF) of 72981 and 72985 is 1.

GCF(72981,72985) = 1

We will now calculate the prime factors of 72981 and 72985, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 72981 and 72985.

How to find the GCF of 72981 and 72985?

We will first find the prime factorization of 72981 and 72985. After we will calculate the factors of 72981 and 72985 and find the biggest common factor number .

Step-1: Prime Factorization of 72981

Prime factors of 72981 are 3, 17, 53. Prime factorization of 72981 in exponential form is:

72981 = 3⁴ × 17¹ × 53¹

Step-2: Prime Factorization of 72985

Prime factors of 72985 are 5, 11, 1327. Prime factorization of 72985 in exponential form is:

72985 = 5¹ × 11¹ × 1327¹

Step-3: Factors of 72981

List of positive integer factors of 72981 that divides 72981 without a remainder.

1, 3, 9, 17, 27, 51, 53, 81, 153, 159, 459, 477, 901, 1377, 1431, 2703, 4293, 8109, 24327

Step-4: Factors of 72985

List of positive integer factors of 72985 that divides 72981 without a remainder.

1, 5, 11, 55, 1327, 6635, 14597

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 72981 and 72985. The biggest common factor number is the GCF number.
So the greatest common factor 72981 and 72985 is 1.

Also check out the Least Common Multiple of 72981 and 72985