What is the Greatest Common Factor of 7990 and 7998?

Greatest common factor (GCF) of 7990 and 7998 is 2.

GCF(7990,7998) = 2

We will now calculate the prime factors of 7990 and 7998, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 7990 and 7998.

How to find the GCF of 7990 and 7998?

We will first find the prime factorization of 7990 and 7998. After we will calculate the factors of 7990 and 7998 and find the biggest common factor number .

Step-1: Prime Factorization of 7990

Prime factors of 7990 are 2, 5, 17, 47. Prime factorization of 7990 in exponential form is:

7990 = 2¹ × 5¹ × 17¹ × 47¹

Step-2: Prime Factorization of 7998

Prime factors of 7998 are 2, 3, 31, 43. Prime factorization of 7998 in exponential form is:

7998 = 2¹ × 3¹ × 31¹ × 43¹

Step-3: Factors of 7990

List of positive integer factors of 7990 that divides 7990 without a remainder.

1, 2, 5, 10, 17, 34, 47, 85, 94, 170, 235, 470, 799, 1598, 3995

Step-4: Factors of 7998

List of positive integer factors of 7998 that divides 7990 without a remainder.

1, 2, 3, 6, 31, 43, 62, 86, 93, 129, 186, 258, 1333, 2666, 3999

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 7990 and 7998. The biggest common factor number is the GCF number.
So the greatest common factor 7990 and 7998 is 2.

Also check out the Least Common Multiple of 7990 and 7998