What is the Least Common Multiple of 18978 and 18993?

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 18978 and 18993 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 18978 and 18993, than apply into the LCM equation.

GCF(18978,18993) = 3
LCM(18978,18993) = ( 18978 × 18993) / 3
LCM(18978,18993) = 360449154 / 3
LCM(18978,18993) = 120149718

Least Common Multiple (LCM) of 18978 and 18993 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 18978 and 18993. First we will calculate the prime factors of 18978 and 18993.

Prime Factorization of 18978

Prime Factorization of 18993

Now multiplying the highest exponent prime factors to calculate the LCM of 18978 and 18993.

LCM(18978,18993) = 2¹ × 3¹ × 3163¹ × 13¹ × 487¹
LCM(18978,18993) = 120149718