What is the Greatest Common Factor of 81858 and 81878?

Greatest common factor (GCF) of 81858 and 81878 is 2.

GCF(81858,81878) = 2

We will now calculate the prime factors of 81858 and 81878, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 81858 and 81878.

How to find the GCF of 81858 and 81878?

We will first find the prime factorization of 81858 and 81878. After we will calculate the factors of 81858 and 81878 and find the biggest common factor number .

Step-1: Prime Factorization of 81858

Prime factors of 81858 are 2, 3, 7, 1949. Prime factorization of 81858 in exponential form is:

81858 = 2¹ × 3¹ × 7¹ × 1949¹

Step-2: Prime Factorization of 81878

Prime factors of 81878 are 2, 40939. Prime factorization of 81878 in exponential form is:

81878 = 2¹ × 40939¹

Step-3: Factors of 81858

List of positive integer factors of 81858 that divides 81858 without a remainder.

1, 2, 3, 6, 7, 14, 21, 42, 1949, 3898, 5847, 11694, 13643, 27286, 40929

Step-4: Factors of 81878

List of positive integer factors of 81878 that divides 81858 without a remainder.

1, 2, 40939

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 81858 and 81878. The biggest common factor number is the GCF number.
So the greatest common factor 81858 and 81878 is 2.

Also check out the Least Common Multiple of 81858 and 81878