What is the Least Common Multiple of 9990 and 10005?

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 9990 and 10005 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 9990 and 10005, than apply into the LCM equation.

GCF(9990,10005) = 15
LCM(9990,10005) = ( 9990 × 10005) / 15
LCM(9990,10005) = 99949950 / 15
LCM(9990,10005) = 6663330

Least Common Multiple (LCM) of 9990 and 10005 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 9990 and 10005. First we will calculate the prime factors of 9990 and 10005.

Prime Factorization of 9990

Prime Factorization of 10005

Now multiplying the highest exponent prime factors to calculate the LCM of 9990 and 10005.

LCM(9990,10005) = 2¹ × 3³ × 5¹ × 37¹ × 23¹ × 29¹
LCM(9990,10005) = 6663330