What is the Greatest Common Factor of 81942 and 81949?

Greatest common factor (GCF) of 81942 and 81949 is 7.

GCF(81942,81949) = 7

We will now calculate the prime factors of 81942 and 81949, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 81942 and 81949.

How to find the GCF of 81942 and 81949?

We will first find the prime factorization of 81942 and 81949. After we will calculate the factors of 81942 and 81949 and find the biggest common factor number .

Step-1: Prime Factorization of 81942

Prime factors of 81942 are 2, 3, 7, 1951. Prime factorization of 81942 in exponential form is:

81942 = 2¹ × 3¹ × 7¹ × 1951¹

Step-2: Prime Factorization of 81949

Prime factors of 81949 are 7, 23, 509. Prime factorization of 81949 in exponential form is:

81949 = 7¹ × 23¹ × 509¹

Step-3: Factors of 81942

List of positive integer factors of 81942 that divides 81942 without a remainder.

1, 2, 3, 6, 7, 14, 21, 42, 1951, 3902, 5853, 11706, 13657, 27314, 40971

Step-4: Factors of 81949

List of positive integer factors of 81949 that divides 81942 without a remainder.

1, 7, 23, 161, 509, 3563, 11707

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 81942 and 81949. The biggest common factor number is the GCF number.
So the greatest common factor 81942 and 81949 is 7.

Also check out the Least Common Multiple of 81942 and 81949