What is the Least Common Multiple of 11989 and 12008?

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 11989 and 12008 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 11989 and 12008, than apply into the LCM equation.

GCF(11989,12008) = 19
LCM(11989,12008) = ( 11989 × 12008) / 19
LCM(11989,12008) = 143963912 / 19
LCM(11989,12008) = 7577048

Least Common Multiple (LCM) of 11989 and 12008 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 11989 and 12008. First we will calculate the prime factors of 11989 and 12008.

Prime Factorization of 11989

Prime Factorization of 12008

Now multiplying the highest exponent prime factors to calculate the LCM of 11989 and 12008.

LCM(11989,12008) = 19¹ × 631¹ × 2³ × 79¹
LCM(11989,12008) = 7577048