What is the Least Common Multiple of 81356 and 81368?

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 81356 and 81368 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81356 and 81368, than apply into the LCM equation.

GCF(81356,81368) = 4
LCM(81356,81368) = ( 81356 × 81368) / 4
LCM(81356,81368) = 6619775008 / 4
LCM(81356,81368) = 1654943752

Least Common Multiple (LCM) of 81356 and 81368 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81356 and 81368. First we will calculate the prime factors of 81356 and 81368.

Prime Factorization of 81356

Prime Factorization of 81368

Now multiplying the highest exponent prime factors to calculate the LCM of 81356 and 81368.

LCM(81356,81368) = 2³ × 11¹ × 43² × 7¹ × 1453¹
LCM(81356,81368) = 1654943752