What is the Least Common Multiple of 17991 and 18003?

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 17991 and 18003 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 17991 and 18003, than apply into the LCM equation.

GCF(17991,18003) = 3
LCM(17991,18003) = ( 17991 × 18003) / 3
LCM(17991,18003) = 323891973 / 3
LCM(17991,18003) = 107963991

Least Common Multiple (LCM) of 17991 and 18003 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 17991 and 18003. First we will calculate the prime factors of 17991 and 18003.

Prime Factorization of 17991

Prime Factorization of 18003

Now multiplying the highest exponent prime factors to calculate the LCM of 17991 and 18003.

LCM(17991,18003) = 3² × 1999¹ × 17¹ × 353¹
LCM(17991,18003) = 107963991