What is the Greatest Common Factor of 47421 and 47430?

Greatest common factor (GCF) of 47421 and 47430 is 9.

GCF(47421,47430) = 9

We will now calculate the prime factors of 47421 and 47430, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 47421 and 47430.

How to find the GCF of 47421 and 47430?

We will first find the prime factorization of 47421 and 47430. After we will calculate the factors of 47421 and 47430 and find the biggest common factor number .

Step-1: Prime Factorization of 47421

Prime factors of 47421 are 3, 11, 479. Prime factorization of 47421 in exponential form is:

47421 = 3² × 11¹ × 479¹

Step-2: Prime Factorization of 47430

Prime factors of 47430 are 2, 3, 5, 17, 31. Prime factorization of 47430 in exponential form is:

47430 = 2¹ × 3² × 5¹ × 17¹ × 31¹

Step-3: Factors of 47421

List of positive integer factors of 47421 that divides 47421 without a remainder.

1, 3, 9, 11, 33, 99, 479, 1437, 4311, 5269, 15807

Step-4: Factors of 47430

List of positive integer factors of 47430 that divides 47421 without a remainder.

1, 2, 3, 5, 6, 9, 10, 15, 17, 18, 30, 31, 34, 45, 51, 62, 85, 90, 93, 102, 153, 155, 170, 186, 255, 279, 306, 310, 465, 510, 527, 558, 765, 930, 1054, 1395, 1530, 1581, 2635, 2790, 3162, 4743, 5270, 7905, 9486, 15810, 23715

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 47421 and 47430. The biggest common factor number is the GCF number.
So the greatest common factor 47421 and 47430 is 9.

Also check out the Least Common Multiple of 47421 and 47430