What is the Greatest Common Factor of 81858 and 81862?

Greatest common factor (GCF) of 81858 and 81862 is 2.

GCF(81858,81862) = 2

We will now calculate the prime factors of 81858 and 81862, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 81858 and 81862.

How to find the GCF of 81858 and 81862?

We will first find the prime factorization of 81858 and 81862. After we will calculate the factors of 81858 and 81862 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 81862

Prime factors of 81862 are 2, 11, 61. Prime factorization of 81862 in exponential form is:

81862 = 2¹ × 11¹ × 61²

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 81862

List of positive integer factors of 81862 that divides 81858 without a remainder.

1, 2, 11, 22, 61, 122, 671, 1342, 3721, 7442, 40931

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 81858 and 81862. The biggest common factor number is the GCF number.
So the greatest common factor 81858 and 81862 is 2.

Also check out the Least Common Multiple of 81858 and 81862