What is the Least Common Multiple of 15723 and 15731?

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 15723 and 15731 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 15723 and 15731, than apply into the LCM equation.

GCF(15723,15731) = 1
LCM(15723,15731) = ( 15723 × 15731) / 1
LCM(15723,15731) = 247338513 / 1
LCM(15723,15731) = 247338513

Least Common Multiple (LCM) of 15723 and 15731 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 15723 and 15731. First we will calculate the prime factors of 15723 and 15731.

Prime Factorization of 15723

Prime Factorization of 15731

Now multiplying the highest exponent prime factors to calculate the LCM of 15723 and 15731.

LCM(15723,15731) = 3² × 1747¹ × 15731¹
LCM(15723,15731) = 247338513