What is the Least Common Multiple of 2430 and 2445?

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 2430 and 2445 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 2430 and 2445, than apply into the LCM equation.

GCF(2430,2445) = 15
LCM(2430,2445) = ( 2430 × 2445) / 15
LCM(2430,2445) = 5941350 / 15
LCM(2430,2445) = 396090

Least Common Multiple (LCM) of 2430 and 2445 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 2430 and 2445. First we will calculate the prime factors of 2430 and 2445.

Prime Factorization of 2430

Prime Factorization of 2445

Now multiplying the highest exponent prime factors to calculate the LCM of 2430 and 2445.

LCM(2430,2445) = 2¹ × 3⁵ × 5¹ × 163¹
LCM(2430,2445) = 396090