What is the Greatest Common Factor of 21985 and 22004?

Greatest common factor (GCF) of 21985 and 22004 is 1.

GCF(21985,22004) = 1

We will now calculate the prime factors of 21985 and 22004, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 21985 and 22004.

How to find the GCF of 21985 and 22004?

We will first find the prime factorization of 21985 and 22004. After we will calculate the factors of 21985 and 22004 and find the biggest common factor number .

Step-1: Prime Factorization of 21985

Prime factors of 21985 are 5, 4397. Prime factorization of 21985 in exponential form is:

21985 = 5¹ × 4397¹

Step-2: Prime Factorization of 22004

Prime factors of 22004 are 2, 5501. Prime factorization of 22004 in exponential form is:

22004 = 2² × 5501¹

Step-3: Factors of 21985

List of positive integer factors of 21985 that divides 21985 without a remainder.

1, 5, 4397

Step-4: Factors of 22004

List of positive integer factors of 22004 that divides 21985 without a remainder.

1, 2, 4, 5501, 11002

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 21985 and 22004. The biggest common factor number is the GCF number.
So the greatest common factor 21985 and 22004 is 1.

Also check out the Least Common Multiple of 21985 and 22004