What is the Greatest Common Factor of 10991 and 11005?

Greatest common factor (GCF) of 10991 and 11005 is 1.

GCF(10991,11005) = 1

We will now calculate the prime factors of 10991 and 11005, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 10991 and 11005.

How to find the GCF of 10991 and 11005?

We will first find the prime factorization of 10991 and 11005. After we will calculate the factors of 10991 and 11005 and find the biggest common factor number .

Step-1: Prime Factorization of 10991

Prime factors of 10991 are 29, 379. Prime factorization of 10991 in exponential form is:

10991 = 29¹ × 379¹

Step-2: Prime Factorization of 11005

Prime factors of 11005 are 5, 31, 71. Prime factorization of 11005 in exponential form is:

11005 = 5¹ × 31¹ × 71¹

Step-3: Factors of 10991

List of positive integer factors of 10991 that divides 10991 without a remainder.

1, 29, 379

Step-4: Factors of 11005

List of positive integer factors of 11005 that divides 10991 without a remainder.

1, 5, 31, 71, 155, 355, 2201

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 10991 and 11005. The biggest common factor number is the GCF number.
So the greatest common factor 10991 and 11005 is 1.

Also check out the Least Common Multiple of 10991 and 11005