What is the Least Common Multiple of 8409 and 8422?

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 8409 and 8422 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 8409 and 8422, than apply into the LCM equation.

GCF(8409,8422) = 1
LCM(8409,8422) = ( 8409 × 8422) / 1
LCM(8409,8422) = 70820598 / 1
LCM(8409,8422) = 70820598

Least Common Multiple (LCM) of 8409 and 8422 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 8409 and 8422. First we will calculate the prime factors of 8409 and 8422.

Prime Factorization of 8409

Prime Factorization of 8422

Now multiplying the highest exponent prime factors to calculate the LCM of 8409 and 8422.

LCM(8409,8422) = 3¹ × 2803¹ × 2¹ × 4211¹
LCM(8409,8422) = 70820598