What is the Least Common Multiple of 91800 and 91805?

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 91800 and 91805 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 91800 and 91805, than apply into the LCM equation.

GCF(91800,91805) = 5
LCM(91800,91805) = ( 91800 × 91805) / 5
LCM(91800,91805) = 8427699000 / 5
LCM(91800,91805) = 1685539800

Least Common Multiple (LCM) of 91800 and 91805 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 91800 and 91805. First we will calculate the prime factors of 91800 and 91805.

Prime Factorization of 91800

Prime Factorization of 91805

Now multiplying the highest exponent prime factors to calculate the LCM of 91800 and 91805.

LCM(91800,91805) = 2³ × 3³ × 5² × 17¹ × 7¹ × 43¹ × 61¹
LCM(91800,91805) = 1685539800