What is the Least Common Multiple of 13221 and 13230?

Least common multiple or lowest common denominator (lcd) can be calculated in two way; with the LCM formula calculation of greatest common factor (GCF), or multiplying the prime factors with the highest exponent factor.

Least Common Multiple of 13221 and 13230 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 13221 and 13230, than apply into the LCM equation.

GCF(13221,13230) = 9
LCM(13221,13230) = ( 13221 × 13230) / 9
LCM(13221,13230) = 174913830 / 9
LCM(13221,13230) = 19434870

Least Common Multiple (LCM) of 13221 and 13230 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 13221 and 13230. First we will calculate the prime factors of 13221 and 13230.

Prime Factorization of 13221

Prime Factorization of 13230

Now multiplying the highest exponent prime factors to calculate the LCM of 13221 and 13230.

LCM(13221,13230) = 3³ × 13¹ × 113¹ × 2¹ × 5¹ × 7²
LCM(13221,13230) = 19434870