What is the Least Common Multiple of 18440 and 18455?

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 18455 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 18455, than apply into the LCM equation.

GCF(18440,18455) = 5
LCM(18440,18455) = ( 18440 × 18455) / 5
LCM(18440,18455) = 340310200 / 5
LCM(18440,18455) = 68062040

Least Common Multiple (LCM) of 18440 and 18455 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 18440 and 18455. First we will calculate the prime factors of 18440 and 18455.

Prime Factorization of 18440

Prime Factorization of 18455

Now multiplying the highest exponent prime factors to calculate the LCM of 18440 and 18455.

LCM(18440,18455) = 2³ × 5¹ × 461¹ × 3691¹
LCM(18440,18455) = 68062040