What is the Least Common Multiple of 42068 and 42081?

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 42068 and 42081 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 42068 and 42081, than apply into the LCM equation.

GCF(42068,42081) = 13
LCM(42068,42081) = ( 42068 × 42081) / 13
LCM(42068,42081) = 1770263508 / 13
LCM(42068,42081) = 136174116

Least Common Multiple (LCM) of 42068 and 42081 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 42068 and 42081. First we will calculate the prime factors of 42068 and 42081.

Prime Factorization of 42068

Prime Factorization of 42081

Now multiplying the highest exponent prime factors to calculate the LCM of 42068 and 42081.

LCM(42068,42081) = 2² × 13² × 809¹ × 3¹ × 83¹
LCM(42068,42081) = 136174116