What is the Greatest Common Factor of 21085 and 21091?

Greatest common factor (GCF) of 21085 and 21091 is 1.

GCF(21085,21091) = 1

We will now calculate the prime factors of 21085 and 21091, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 21085 and 21091.

How to find the GCF of 21085 and 21091?

We will first find the prime factorization of 21085 and 21091. After we will calculate the factors of 21085 and 21091 and find the biggest common factor number .

Step-1: Prime Factorization of 21085

Prime factors of 21085 are 5, 4217. Prime factorization of 21085 in exponential form is:

21085 = 5¹ × 4217¹

Step-2: Prime Factorization of 21091

Prime factors of 21091 are 7, 23, 131. Prime factorization of 21091 in exponential form is:

21091 = 7¹ × 23¹ × 131¹

Step-3: Factors of 21085

List of positive integer factors of 21085 that divides 21085 without a remainder.

1, 5, 4217

Step-4: Factors of 21091

List of positive integer factors of 21091 that divides 21085 without a remainder.

1, 7, 23, 131, 161, 917, 3013

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 21085 and 21091. The biggest common factor number is the GCF number.
So the greatest common factor 21085 and 21091 is 1.

Also check out the Least Common Multiple of 21085 and 21091