What is the Least Common Multiple of 369 and 381?

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 369 and 381 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 369 and 381, than apply into the LCM equation.

GCF(369,381) = 3
LCM(369,381) = ( 369 × 381) / 3
LCM(369,381) = 140589 / 3
LCM(369,381) = 46863

Least Common Multiple (LCM) of 369 and 381 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 369 and 381. First we will calculate the prime factors of 369 and 381.

Prime Factorization of 369

Prime Factorization of 381

Now multiplying the highest exponent prime factors to calculate the LCM of 369 and 381.

LCM(369,381) = 3² × 41¹ × 127¹
LCM(369,381) = 46863