What is the Least Common Multiple of 15856 and 15861?

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 15856 and 15861 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 15856 and 15861, than apply into the LCM equation.

GCF(15856,15861) = 1
LCM(15856,15861) = ( 15856 × 15861) / 1
LCM(15856,15861) = 251492016 / 1
LCM(15856,15861) = 251492016

Least Common Multiple (LCM) of 15856 and 15861 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 15856 and 15861. First we will calculate the prime factors of 15856 and 15861.

Prime Factorization of 15856

Prime Factorization of 15861

Now multiplying the highest exponent prime factors to calculate the LCM of 15856 and 15861.

LCM(15856,15861) = 2⁴ × 991¹ × 3¹ × 17¹ × 311¹
LCM(15856,15861) = 251492016