What is the Greatest Common Factor of 18991 and 18995?

Greatest common factor (GCF) of 18991 and 18995 is 1.

GCF(18991,18995) = 1

We will now calculate the prime factors of 18991 and 18995, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 18991 and 18995.

How to find the GCF of 18991 and 18995?

We will first find the prime factorization of 18991 and 18995. After we will calculate the factors of 18991 and 18995 and find the biggest common factor number .

Step-1: Prime Factorization of 18991

Prime factors of 18991 are 7, 2713. Prime factorization of 18991 in exponential form is:

18991 = 7¹ × 2713¹

Step-2: Prime Factorization of 18995

Prime factors of 18995 are 5, 29, 131. Prime factorization of 18995 in exponential form is:

18995 = 5¹ × 29¹ × 131¹

Step-3: Factors of 18991

List of positive integer factors of 18991 that divides 18991 without a remainder.

1, 7, 2713

Step-4: Factors of 18995

List of positive integer factors of 18995 that divides 18991 without a remainder.

1, 5, 29, 131, 145, 655, 3799

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 18991 and 18995. The biggest common factor number is the GCF number.
So the greatest common factor 18991 and 18995 is 1.

Also check out the Least Common Multiple of 18991 and 18995