What is the Greatest Common Factor of 7881 and 7890?

Greatest common factor (GCF) of 7881 and 7890 is 3.

GCF(7881,7890) = 3

We will now calculate the prime factors of 7881 and 7890, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 7881 and 7890.

How to find the GCF of 7881 and 7890?

We will first find the prime factorization of 7881 and 7890. After we will calculate the factors of 7881 and 7890 and find the biggest common factor number .

Step-1: Prime Factorization of 7881

Prime factors of 7881 are 3, 37, 71. Prime factorization of 7881 in exponential form is:

7881 = 3¹ × 37¹ × 71¹

Step-2: Prime Factorization of 7890

Prime factors of 7890 are 2, 3, 5, 263. Prime factorization of 7890 in exponential form is:

7890 = 2¹ × 3¹ × 5¹ × 263¹

Step-3: Factors of 7881

List of positive integer factors of 7881 that divides 7881 without a remainder.

1, 3, 37, 71, 111, 213, 2627

Step-4: Factors of 7890

List of positive integer factors of 7890 that divides 7881 without a remainder.

1, 2, 3, 5, 6, 10, 15, 30, 263, 526, 789, 1315, 1578, 2630, 3945

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 7881 and 7890. The biggest common factor number is the GCF number.
So the greatest common factor 7881 and 7890 is 3.

Also check out the Least Common Multiple of 7881 and 7890