What is the Least Common Multiple of 90440 and 90445?

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 90440 and 90445 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 90440 and 90445, than apply into the LCM equation.

GCF(90440,90445) = 5
LCM(90440,90445) = ( 90440 × 90445) / 5
LCM(90440,90445) = 8179845800 / 5
LCM(90440,90445) = 1635969160

Least Common Multiple (LCM) of 90440 and 90445 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 90440 and 90445. First we will calculate the prime factors of 90440 and 90445.

Prime Factorization of 90440

Prime Factorization of 90445

Now multiplying the highest exponent prime factors to calculate the LCM of 90440 and 90445.

LCM(90440,90445) = 2³ × 5¹ × 7¹ × 17¹ × 19¹ × 18089¹
LCM(90440,90445) = 1635969160