What is the Least Common Multiple of 16821 and 16835?

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 16821 and 16835 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 16821 and 16835, than apply into the LCM equation.

GCF(16821,16835) = 7
LCM(16821,16835) = ( 16821 × 16835) / 7
LCM(16821,16835) = 283181535 / 7
LCM(16821,16835) = 40454505

Least Common Multiple (LCM) of 16821 and 16835 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 16821 and 16835. First we will calculate the prime factors of 16821 and 16835.

Prime Factorization of 16821

Prime Factorization of 16835

Now multiplying the highest exponent prime factors to calculate the LCM of 16821 and 16835.

LCM(16821,16835) = 3³ × 7¹ × 89¹ × 5¹ × 13¹ × 37¹
LCM(16821,16835) = 40454505