What is the Least Common Multiple of 18978 and 18991?

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 18991 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 18991, than apply into the LCM equation.

GCF(18978,18991) = 1
LCM(18978,18991) = ( 18978 × 18991) / 1
LCM(18978,18991) = 360411198 / 1
LCM(18978,18991) = 360411198

Least Common Multiple (LCM) of 18978 and 18991 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 18978 and 18991. First we will calculate the prime factors of 18978 and 18991.

Prime Factorization of 18978

Prime Factorization of 18991

Now multiplying the highest exponent prime factors to calculate the LCM of 18978 and 18991.

LCM(18978,18991) = 2¹ × 3¹ × 3163¹ × 7¹ × 2713¹
LCM(18978,18991) = 360411198