What is the Least Common Multiple of 16805 and 16815?

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 16805 and 16815 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 16805 and 16815, than apply into the LCM equation.

GCF(16805,16815) = 5
LCM(16805,16815) = ( 16805 × 16815) / 5
LCM(16805,16815) = 282576075 / 5
LCM(16805,16815) = 56515215

Least Common Multiple (LCM) of 16805 and 16815 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 16805 and 16815. First we will calculate the prime factors of 16805 and 16815.

Prime Factorization of 16805

Prime Factorization of 16815

Now multiplying the highest exponent prime factors to calculate the LCM of 16805 and 16815.

LCM(16805,16815) = 5¹ × 3361¹ × 3¹ × 19¹ × 59¹
LCM(16805,16815) = 56515215