What is the Least Common Multiple of 81555 and 81575?

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 81555 and 81575 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81555 and 81575, than apply into the LCM equation.

GCF(81555,81575) = 5
LCM(81555,81575) = ( 81555 × 81575) / 5
LCM(81555,81575) = 6652849125 / 5
LCM(81555,81575) = 1330569825

Least Common Multiple (LCM) of 81555 and 81575 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81555 and 81575. First we will calculate the prime factors of 81555 and 81575.

Prime Factorization of 81555

Prime Factorization of 81575

Now multiplying the highest exponent prime factors to calculate the LCM of 81555 and 81575.

LCM(81555,81575) = 3¹ × 5² × 5437¹ × 13¹ × 251¹
LCM(81555,81575) = 1330569825