What is the Least Common Multiple of 5409 and 5415?

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 5409 and 5415 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 5409 and 5415, than apply into the LCM equation.

GCF(5409,5415) = 3
LCM(5409,5415) = ( 5409 × 5415) / 3
LCM(5409,5415) = 29289735 / 3
LCM(5409,5415) = 9763245

Least Common Multiple (LCM) of 5409 and 5415 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 5409 and 5415. First we will calculate the prime factors of 5409 and 5415.

Prime Factorization of 5409

Prime Factorization of 5415

Now multiplying the highest exponent prime factors to calculate the LCM of 5409 and 5415.

LCM(5409,5415) = 3² × 601¹ × 5¹ × 19²
LCM(5409,5415) = 9763245