What is the Greatest Common Factor of 81042 and 81055?

Greatest common factor (GCF) of 81042 and 81055 is 13.

GCF(81042,81055) = 13

We will now calculate the prime factors of 81042 and 81055, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 81042 and 81055.

How to find the GCF of 81042 and 81055?

We will first find the prime factorization of 81042 and 81055. After we will calculate the factors of 81042 and 81055 and find the biggest common factor number .

Step-1: Prime Factorization of 81042

Prime factors of 81042 are 2, 3, 13, 1039. Prime factorization of 81042 in exponential form is:

81042 = 2¹ × 3¹ × 13¹ × 1039¹

Step-2: Prime Factorization of 81055

Prime factors of 81055 are 5, 13, 29, 43. Prime factorization of 81055 in exponential form is:

81055 = 5¹ × 13¹ × 29¹ × 43¹

Step-3: Factors of 81042

List of positive integer factors of 81042 that divides 81042 without a remainder.

1, 2, 3, 6, 13, 26, 39, 78, 1039, 2078, 3117, 6234, 13507, 27014, 40521

Step-4: Factors of 81055

List of positive integer factors of 81055 that divides 81042 without a remainder.

1, 5, 13, 29, 43, 65, 145, 215, 377, 559, 1247, 1885, 2795, 6235, 16211

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 81042 and 81055. The biggest common factor number is the GCF number.
So the greatest common factor 81042 and 81055 is 13.

Also check out the Least Common Multiple of 81042 and 81055