What is the Least Common Multiple of 16890 and 16906?

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 16890 and 16906 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 16890 and 16906, than apply into the LCM equation.

GCF(16890,16906) = 2
LCM(16890,16906) = ( 16890 × 16906) / 2
LCM(16890,16906) = 285542340 / 2
LCM(16890,16906) = 142771170

Least Common Multiple (LCM) of 16890 and 16906 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 16890 and 16906. First we will calculate the prime factors of 16890 and 16906.

Prime Factorization of 16890

Prime Factorization of 16906

Now multiplying the highest exponent prime factors to calculate the LCM of 16890 and 16906.

LCM(16890,16906) = 2¹ × 3¹ × 5¹ × 563¹ × 79¹ × 107¹
LCM(16890,16906) = 142771170