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What is the Least Common Multiple of 16390 and 16400?

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 (LCM) of 16390 and 16400 is 26879600.

LCM(16390,16400) = 26879600

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Least Common Multiple of 16390 and 16400 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 16390 and 16400, than apply into the LCM equation.

GCF(16390,16400) = 10
LCM(16390,16400) = ( 16390 × 16400) / 10
LCM(16390,16400) = 268796000 / 10
LCM(16390,16400) = 26879600

Least Common Multiple (LCM) of 16390 and 16400 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 16390 and 16400. First we will calculate the prime factors of 16390 and 16400.

Prime Factorization of 16390

Prime factors of 16390 are 2, 5, 11, 149. Prime factorization of 16390 in exponential form is:

16390 = 21 × 51 × 111 × 1491

Prime Factorization of 16400

Prime factors of 16400 are 2, 5, 41. Prime factorization of 16400 in exponential form is:

16400 = 24 × 52 × 411

Now multiplying the highest exponent prime factors to calculate the LCM of 16390 and 16400.

LCM(16390,16400) = 24 × 52 × 111 × 1491 × 411
LCM(16390,16400) = 26879600