What is the Least Common Multiple of 15609 and 15615?

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 15609 and 15615 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 15609 and 15615, than apply into the LCM equation.

GCF(15609,15615) = 3
LCM(15609,15615) = ( 15609 × 15615) / 3
LCM(15609,15615) = 243734535 / 3
LCM(15609,15615) = 81244845

Least Common Multiple (LCM) of 15609 and 15615 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 15609 and 15615. First we will calculate the prime factors of 15609 and 15615.

Prime Factorization of 15609

Prime Factorization of 15615

Now multiplying the highest exponent prime factors to calculate the LCM of 15609 and 15615.

LCM(15609,15615) = 3² × 11² × 43¹ × 5¹ × 347¹
LCM(15609,15615) = 81244845