What is the Least Common Multiple of 27981 and 27993?

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 27981 and 27993 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 27981 and 27993, than apply into the LCM equation.

GCF(27981,27993) = 3
LCM(27981,27993) = ( 27981 × 27993) / 3
LCM(27981,27993) = 783272133 / 3
LCM(27981,27993) = 261090711

Least Common Multiple (LCM) of 27981 and 27993 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 27981 and 27993. First we will calculate the prime factors of 27981 and 27993.

Prime Factorization of 27981

Prime Factorization of 27993

Now multiplying the highest exponent prime factors to calculate the LCM of 27981 and 27993.

LCM(27981,27993) = 3² × 3109¹ × 7¹ × 31¹ × 43¹
LCM(27981,27993) = 261090711