What is the Least Common Multiple of 7842 and 7858?

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 7842 and 7858 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7842 and 7858, than apply into the LCM equation.

GCF(7842,7858) = 2
LCM(7842,7858) = ( 7842 × 7858) / 2
LCM(7842,7858) = 61622436 / 2
LCM(7842,7858) = 30811218

Least Common Multiple (LCM) of 7842 and 7858 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 7842 and 7858. First we will calculate the prime factors of 7842 and 7858.

Prime Factorization of 7842

Prime Factorization of 7858

Now multiplying the highest exponent prime factors to calculate the LCM of 7842 and 7858.

LCM(7842,7858) = 2¹ × 3¹ × 1307¹ × 3929¹
LCM(7842,7858) = 30811218