What is the Least Common Multiple of 85408 and 85418?

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 85408 and 85418 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 85408 and 85418, than apply into the LCM equation.

GCF(85408,85418) = 2
LCM(85408,85418) = ( 85408 × 85418) / 2
LCM(85408,85418) = 7295380544 / 2
LCM(85408,85418) = 3647690272

Least Common Multiple (LCM) of 85408 and 85418 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 85408 and 85418. First we will calculate the prime factors of 85408 and 85418.

Prime Factorization of 85408

Prime Factorization of 85418

Now multiplying the highest exponent prime factors to calculate the LCM of 85408 and 85418.

LCM(85408,85418) = 2⁵ × 17¹ × 157¹ × 42709¹
LCM(85408,85418) = 3647690272