What is the Greatest Common Factor of 81158 and 81168?

Greatest common factor (GCF) of 81158 and 81168 is 2.

GCF(81158,81168) = 2

We will now calculate the prime factors of 81158 and 81168, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 81158 and 81168.

How to find the GCF of 81158 and 81168?

We will first find the prime factorization of 81158 and 81168. After we will calculate the factors of 81158 and 81168 and find the biggest common factor number .

Step-1: Prime Factorization of 81158

Prime factors of 81158 are 2, 7, 11, 17, 31. Prime factorization of 81158 in exponential form is:

81158 = 2¹ × 7¹ × 11¹ × 17¹ × 31¹

Step-2: Prime Factorization of 81168

Prime factors of 81168 are 2, 3, 19, 89. Prime factorization of 81168 in exponential form is:

81168 = 2⁴ × 3¹ × 19¹ × 89¹

Step-3: Factors of 81158

List of positive integer factors of 81158 that divides 81158 without a remainder.

1, 2, 7, 11, 14, 17, 22, 31, 34, 62, 77, 119, 154, 187, 217, 238, 341, 374, 434, 527, 682, 1054, 1309, 2387, 2618, 3689, 4774, 5797, 7378, 11594, 40579

Step-4: Factors of 81168

List of positive integer factors of 81168 that divides 81158 without a remainder.

1, 2, 3, 4, 6, 8, 12, 16, 19, 24, 38, 48, 57, 76, 89, 114, 152, 178, 228, 267, 304, 356, 456, 534, 712, 912, 1068, 1424, 1691, 2136, 3382, 4272, 5073, 6764, 10146, 13528, 20292, 27056, 40584

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 81158 and 81168. The biggest common factor number is the GCF number.
So the greatest common factor 81158 and 81168 is 2.

Also check out the Least Common Multiple of 81158 and 81168