What is the Least Common Multiple of 42378 and 42387?

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 42378 and 42387 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 42378 and 42387, than apply into the LCM equation.

GCF(42378,42387) = 3
LCM(42378,42387) = ( 42378 × 42387) / 3
LCM(42378,42387) = 1796276286 / 3
LCM(42378,42387) = 598758762

Least Common Multiple (LCM) of 42378 and 42387 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 42378 and 42387. First we will calculate the prime factors of 42378 and 42387.

Prime Factorization of 42378

Prime Factorization of 42387

Now multiplying the highest exponent prime factors to calculate the LCM of 42378 and 42387.

LCM(42378,42387) = 2¹ × 3¹ × 7¹ × 1009¹ × 71¹ × 199¹
LCM(42378,42387) = 598758762