What is the Least Common Multiple of 18440 and 18457?

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 18440 and 18457 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 18440 and 18457, than apply into the LCM equation.

GCF(18440,18457) = 1
LCM(18440,18457) = ( 18440 × 18457) / 1
LCM(18440,18457) = 340347080 / 1
LCM(18440,18457) = 340347080

Least Common Multiple (LCM) of 18440 and 18457 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 18440 and 18457. First we will calculate the prime factors of 18440 and 18457.

Prime Factorization of 18440

Prime Factorization of 18457

Now multiplying the highest exponent prime factors to calculate the LCM of 18440 and 18457.

LCM(18440,18457) = 2³ × 5¹ × 461¹ × 18457¹
LCM(18440,18457) = 340347080