What is the Least Common Multiple of 18810 and 18815?

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 18810 and 18815 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 18810 and 18815, than apply into the LCM equation.

GCF(18810,18815) = 5
LCM(18810,18815) = ( 18810 × 18815) / 5
LCM(18810,18815) = 353910150 / 5
LCM(18810,18815) = 70782030

Least Common Multiple (LCM) of 18810 and 18815 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 18810 and 18815. First we will calculate the prime factors of 18810 and 18815.

Prime Factorization of 18810

Prime Factorization of 18815

Now multiplying the highest exponent prime factors to calculate the LCM of 18810 and 18815.

LCM(18810,18815) = 2¹ × 3² × 5¹ × 11¹ × 19¹ × 53¹ × 71¹
LCM(18810,18815) = 70782030