What is the Least Common Multiple of 13803 and 13821?

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 13803 and 13821 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 13803 and 13821, than apply into the LCM equation.

GCF(13803,13821) = 3
LCM(13803,13821) = ( 13803 × 13821) / 3
LCM(13803,13821) = 190771263 / 3
LCM(13803,13821) = 63590421

Least Common Multiple (LCM) of 13803 and 13821 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 13803 and 13821. First we will calculate the prime factors of 13803 and 13821.

Prime Factorization of 13803

Prime Factorization of 13821

Now multiplying the highest exponent prime factors to calculate the LCM of 13803 and 13821.

LCM(13803,13821) = 3¹ × 43¹ × 107¹ × 17¹ × 271¹
LCM(13803,13821) = 63590421