What is the Least Common Multiple of 81891 and 81903?

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 81891 and 81903 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81891 and 81903, than apply into the LCM equation.

GCF(81891,81903) = 3
LCM(81891,81903) = ( 81891 × 81903) / 3
LCM(81891,81903) = 6707118573 / 3
LCM(81891,81903) = 2235706191

Least Common Multiple (LCM) of 81891 and 81903 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81891 and 81903. First we will calculate the prime factors of 81891 and 81903.

Prime Factorization of 81891

Prime Factorization of 81903

Now multiplying the highest exponent prime factors to calculate the LCM of 81891 and 81903.

LCM(81891,81903) = 3⁵ × 337¹ × 23¹ × 1187¹
LCM(81891,81903) = 2235706191