What is the Least Common Multiple of 4390 and 4405?

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 4390 and 4405 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 4390 and 4405, than apply into the LCM equation.

GCF(4390,4405) = 5
LCM(4390,4405) = ( 4390 × 4405) / 5
LCM(4390,4405) = 19337950 / 5
LCM(4390,4405) = 3867590

Least Common Multiple (LCM) of 4390 and 4405 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 4390 and 4405. First we will calculate the prime factors of 4390 and 4405.

Prime Factorization of 4390

Prime Factorization of 4405

Now multiplying the highest exponent prime factors to calculate the LCM of 4390 and 4405.

LCM(4390,4405) = 2¹ × 5¹ × 439¹ × 881¹
LCM(4390,4405) = 3867590