What is the Least Common Multiple of 15813 and 15831?

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 15813 and 15831 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 15813 and 15831, than apply into the LCM equation.

GCF(15813,15831) = 9
LCM(15813,15831) = ( 15813 × 15831) / 9
LCM(15813,15831) = 250335603 / 9
LCM(15813,15831) = 27815067

Least Common Multiple (LCM) of 15813 and 15831 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 15813 and 15831. First we will calculate the prime factors of 15813 and 15831.

Prime Factorization of 15813

Prime Factorization of 15831

Now multiplying the highest exponent prime factors to calculate the LCM of 15813 and 15831.

LCM(15813,15831) = 3² × 7¹ × 251¹ × 1759¹
LCM(15813,15831) = 27815067