What is the Least Common Multiple of 42378 and 42386?

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 42386 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 42386, than apply into the LCM equation.

GCF(42378,42386) = 2
LCM(42378,42386) = ( 42378 × 42386) / 2
LCM(42378,42386) = 1796233908 / 2
LCM(42378,42386) = 898116954

Least Common Multiple (LCM) of 42378 and 42386 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 42378 and 42386. First we will calculate the prime factors of 42378 and 42386.

Prime Factorization of 42378

Prime Factorization of 42386

Now multiplying the highest exponent prime factors to calculate the LCM of 42378 and 42386.

LCM(42378,42386) = 2¹ × 3¹ × 7¹ × 1009¹ × 21193¹
LCM(42378,42386) = 898116954