What is the Greatest Common Factor of 21147 and 21151?

Greatest common factor (GCF) of 21147 and 21151 is 1.

GCF(21147,21151) = 1

We will now calculate the prime factors of 21147 and 21151, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 21147 and 21151.

How to find the GCF of 21147 and 21151?

We will first find the prime factorization of 21147 and 21151. After we will calculate the factors of 21147 and 21151 and find the biggest common factor number .

Step-1: Prime Factorization of 21147

Prime factors of 21147 are 3, 7, 19, 53. Prime factorization of 21147 in exponential form is:

21147 = 3¹ × 7¹ × 19¹ × 53¹

Step-2: Prime Factorization of 21151

Prime factors of 21151 are 13, 1627. Prime factorization of 21151 in exponential form is:

21151 = 13¹ × 1627¹

Step-3: Factors of 21147

List of positive integer factors of 21147 that divides 21147 without a remainder.

1, 3, 7, 19, 21, 53, 57, 133, 159, 371, 399, 1007, 1113, 3021, 7049

Step-4: Factors of 21151

List of positive integer factors of 21151 that divides 21147 without a remainder.

1, 13, 1627

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 21147 and 21151. The biggest common factor number is the GCF number.
So the greatest common factor 21147 and 21151 is 1.

Also check out the Least Common Multiple of 21147 and 21151