What is the Least Common Multiple of 72403 and 72421?

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 72403 and 72421 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 72403 and 72421, than apply into the LCM equation.

GCF(72403,72421) = 1
LCM(72403,72421) = ( 72403 × 72421) / 1
LCM(72403,72421) = 5243497663 / 1
LCM(72403,72421) = 5243497663

Least Common Multiple (LCM) of 72403 and 72421 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 72403 and 72421. First we will calculate the prime factors of 72403 and 72421.

Prime Factorization of 72403

Prime Factorization of 72421

Now multiplying the highest exponent prime factors to calculate the LCM of 72403 and 72421.

LCM(72403,72421) = 17¹ × 4259¹ × 72421¹
LCM(72403,72421) = 5243497663