What is the Least Common Multiple of 68439 and 68445?

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 68439 and 68445 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 68439 and 68445, than apply into the LCM equation.

GCF(68439,68445) = 3
LCM(68439,68445) = ( 68439 × 68445) / 3
LCM(68439,68445) = 4684307355 / 3
LCM(68439,68445) = 1561435785

Least Common Multiple (LCM) of 68439 and 68445 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 68439 and 68445. First we will calculate the prime factors of 68439 and 68445.

Prime Factorization of 68439

Prime Factorization of 68445

Now multiplying the highest exponent prime factors to calculate the LCM of 68439 and 68445.

LCM(68439,68445) = 3⁴ × 7¹ × 3259¹ × 5¹ × 13²
LCM(68439,68445) = 1561435785