What is the Least Common Multiple of 28221 and 28239?

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 28221 and 28239 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 28221 and 28239, than apply into the LCM equation.

GCF(28221,28239) = 3
LCM(28221,28239) = ( 28221 × 28239) / 3
LCM(28221,28239) = 796932819 / 3
LCM(28221,28239) = 265644273

Least Common Multiple (LCM) of 28221 and 28239 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 28221 and 28239. First we will calculate the prime factors of 28221 and 28239.

Prime Factorization of 28221

Prime Factorization of 28239

Now multiplying the highest exponent prime factors to calculate the LCM of 28221 and 28239.

LCM(28221,28239) = 3¹ × 23¹ × 409¹ × 9413¹
LCM(28221,28239) = 265644273