What is the Least Common Multiple of 39981 and 39989?

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 39981 and 39989 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 39981 and 39989, than apply into the LCM equation.

GCF(39981,39989) = 1
LCM(39981,39989) = ( 39981 × 39989) / 1
LCM(39981,39989) = 1598800209 / 1
LCM(39981,39989) = 1598800209

Least Common Multiple (LCM) of 39981 and 39989 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 39981 and 39989. First we will calculate the prime factors of 39981 and 39989.

Prime Factorization of 39981

Prime Factorization of 39989

Now multiplying the highest exponent prime factors to calculate the LCM of 39981 and 39989.

LCM(39981,39989) = 3¹ × 13327¹ × 39989¹
LCM(39981,39989) = 1598800209