What is the Least Common Multiple of 1368 and 1381?

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 1368 and 1381 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1368 and 1381, than apply into the LCM equation.

GCF(1368,1381) = 1
LCM(1368,1381) = ( 1368 × 1381) / 1
LCM(1368,1381) = 1889208 / 1
LCM(1368,1381) = 1889208

Least Common Multiple (LCM) of 1368 and 1381 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 1368 and 1381. First we will calculate the prime factors of 1368 and 1381.

Prime Factorization of 1368

Prime Factorization of 1381

Now multiplying the highest exponent prime factors to calculate the LCM of 1368 and 1381.

LCM(1368,1381) = 2³ × 3² × 19¹ × 1381¹
LCM(1368,1381) = 1889208