What is the Least Common Multiple of 72144 and 72161?

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 72144 and 72161 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 72144 and 72161, than apply into the LCM equation.

GCF(72144,72161) = 1
LCM(72144,72161) = ( 72144 × 72161) / 1
LCM(72144,72161) = 5205983184 / 1
LCM(72144,72161) = 5205983184

Least Common Multiple (LCM) of 72144 and 72161 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 72144 and 72161. First we will calculate the prime factors of 72144 and 72161.

Prime Factorization of 72144

Prime Factorization of 72161

Now multiplying the highest exponent prime factors to calculate the LCM of 72144 and 72161.

LCM(72144,72161) = 2⁴ × 3³ × 167¹ × 72161¹
LCM(72144,72161) = 5205983184