What is the Least Common Multiple of 15981 and 15988?

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 15981 and 15988 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 15981 and 15988, than apply into the LCM equation.

GCF(15981,15988) = 7
LCM(15981,15988) = ( 15981 × 15988) / 7
LCM(15981,15988) = 255504228 / 7
LCM(15981,15988) = 36500604

Least Common Multiple (LCM) of 15981 and 15988 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 15981 and 15988. First we will calculate the prime factors of 15981 and 15988.

Prime Factorization of 15981

Prime Factorization of 15988

Now multiplying the highest exponent prime factors to calculate the LCM of 15981 and 15988.

LCM(15981,15988) = 3¹ × 7¹ × 761¹ × 2² × 571¹
LCM(15981,15988) = 36500604