What is the Least Common Multiple of 81191 and 81209?

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 81191 and 81209 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81191 and 81209, than apply into the LCM equation.

GCF(81191,81209) = 1
LCM(81191,81209) = ( 81191 × 81209) / 1
LCM(81191,81209) = 6593439919 / 1
LCM(81191,81209) = 6593439919

Least Common Multiple (LCM) of 81191 and 81209 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81191 and 81209. First we will calculate the prime factors of 81191 and 81209.

Prime Factorization of 81191

Prime Factorization of 81209

Now multiplying the highest exponent prime factors to calculate the LCM of 81191 and 81209.

LCM(81191,81209) = 11³ × 61¹ × 17² × 281¹
LCM(81191,81209) = 6593439919