What is the Least Common Multiple of 42144 and 42155?

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 42144 and 42155 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 42144 and 42155, than apply into the LCM equation.

GCF(42144,42155) = 1
LCM(42144,42155) = ( 42144 × 42155) / 1
LCM(42144,42155) = 1776580320 / 1
LCM(42144,42155) = 1776580320

Least Common Multiple (LCM) of 42144 and 42155 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 42144 and 42155. First we will calculate the prime factors of 42144 and 42155.

Prime Factorization of 42144

Prime Factorization of 42155

Now multiplying the highest exponent prime factors to calculate the LCM of 42144 and 42155.

LCM(42144,42155) = 2⁵ × 3¹ × 439¹ × 5¹ × 8431¹
LCM(42144,42155) = 1776580320