What is the Least Common Multiple of 16856 and 16870?

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 16856 and 16870 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 16856 and 16870, than apply into the LCM equation.

GCF(16856,16870) = 14
LCM(16856,16870) = ( 16856 × 16870) / 14
LCM(16856,16870) = 284360720 / 14
LCM(16856,16870) = 20311480

Least Common Multiple (LCM) of 16856 and 16870 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 16856 and 16870. First we will calculate the prime factors of 16856 and 16870.

Prime Factorization of 16856

Prime Factorization of 16870

Now multiplying the highest exponent prime factors to calculate the LCM of 16856 and 16870.

LCM(16856,16870) = 2³ × 7² × 43¹ × 5¹ × 241¹
LCM(16856,16870) = 20311480