What is the Greatest Common Factor of 25221 and 25239?

Greatest common factor (GCF) of 25221 and 25239 is 3.

GCF(25221,25239) = 3

We will now calculate the prime factors of 25221 and 25239, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 25221 and 25239.

How to find the GCF of 25221 and 25239?

We will first find the prime factorization of 25221 and 25239. After we will calculate the factors of 25221 and 25239 and find the biggest common factor number .

Step-1: Prime Factorization of 25221

Prime factors of 25221 are 3, 7, 1201. Prime factorization of 25221 in exponential form is:

25221 = 3¹ × 7¹ × 1201¹

Step-2: Prime Factorization of 25239

Prime factors of 25239 are 3, 47, 179. Prime factorization of 25239 in exponential form is:

25239 = 3¹ × 47¹ × 179¹

Step-3: Factors of 25221

List of positive integer factors of 25221 that divides 25221 without a remainder.

1, 3, 7, 21, 1201, 3603, 8407

Step-4: Factors of 25239

List of positive integer factors of 25239 that divides 25221 without a remainder.

1, 3, 47, 141, 179, 537, 8413

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 25221 and 25239. The biggest common factor number is the GCF number.
So the greatest common factor 25221 and 25239 is 3.

Also check out the Least Common Multiple of 25221 and 25239