What is the Least Common Multiple of 15605 and 15609?

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 15605 and 15609 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 15605 and 15609, than apply into the LCM equation.

GCF(15605,15609) = 1
LCM(15605,15609) = ( 15605 × 15609) / 1
LCM(15605,15609) = 243578445 / 1
LCM(15605,15609) = 243578445

Least Common Multiple (LCM) of 15605 and 15609 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 15605 and 15609. First we will calculate the prime factors of 15605 and 15609.

Prime Factorization of 15605

Prime Factorization of 15609

Now multiplying the highest exponent prime factors to calculate the LCM of 15605 and 15609.

LCM(15605,15609) = 5¹ × 3121¹ × 3¹ × 11² × 43¹
LCM(15605,15609) = 243578445