What is the Least Common Multiple of 39609 and 39615?

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 39609 and 39615 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 39609 and 39615, than apply into the LCM equation.

GCF(39609,39615) = 3
LCM(39609,39615) = ( 39609 × 39615) / 3
LCM(39609,39615) = 1569110535 / 3
LCM(39609,39615) = 523036845

Least Common Multiple (LCM) of 39609 and 39615 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 39609 and 39615. First we will calculate the prime factors of 39609 and 39615.

Prime Factorization of 39609

Prime Factorization of 39615

Now multiplying the highest exponent prime factors to calculate the LCM of 39609 and 39615.

LCM(39609,39615) = 3⁵ × 163¹ × 5¹ × 19¹ × 139¹
LCM(39609,39615) = 523036845