What is the Least Common Multiple of 12990 and 12996?

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 12990 and 12996 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 12990 and 12996, than apply into the LCM equation.

GCF(12990,12996) = 6
LCM(12990,12996) = ( 12990 × 12996) / 6
LCM(12990,12996) = 168818040 / 6
LCM(12990,12996) = 28136340

Least Common Multiple (LCM) of 12990 and 12996 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 12990 and 12996. First we will calculate the prime factors of 12990 and 12996.

Prime Factorization of 12990

Prime Factorization of 12996

Now multiplying the highest exponent prime factors to calculate the LCM of 12990 and 12996.

LCM(12990,12996) = 2² × 3² × 5¹ × 433¹ × 19²
LCM(12990,12996) = 28136340