What is the Least Common Multiple of 81531 and 81546?

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 81531 and 81546 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81531 and 81546, than apply into the LCM equation.

GCF(81531,81546) = 3
LCM(81531,81546) = ( 81531 × 81546) / 3
LCM(81531,81546) = 6648526926 / 3
LCM(81531,81546) = 2216175642

Least Common Multiple (LCM) of 81531 and 81546 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81531 and 81546. First we will calculate the prime factors of 81531 and 81546.

Prime Factorization of 81531

Prime Factorization of 81546

Now multiplying the highest exponent prime factors to calculate the LCM of 81531 and 81546.

LCM(81531,81546) = 3² × 9059¹ × 2¹ × 13591¹
LCM(81531,81546) = 2216175642