What is the Least Common Multiple of 6398 and 6404?

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 6398 and 6404 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 6398 and 6404, than apply into the LCM equation.

GCF(6398,6404) = 2
LCM(6398,6404) = ( 6398 × 6404) / 2
LCM(6398,6404) = 40972792 / 2
LCM(6398,6404) = 20486396

Least Common Multiple (LCM) of 6398 and 6404 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 6398 and 6404. First we will calculate the prime factors of 6398 and 6404.

Prime Factorization of 6398

Prime Factorization of 6404

Now multiplying the highest exponent prime factors to calculate the LCM of 6398 and 6404.

LCM(6398,6404) = 2² × 7¹ × 457¹ × 1601¹
LCM(6398,6404) = 20486396