What is the Least Common Multiple of 28109 and 28115?

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 28109 and 28115 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 28109 and 28115, than apply into the LCM equation.

GCF(28109,28115) = 1
LCM(28109,28115) = ( 28109 × 28115) / 1
LCM(28109,28115) = 790284535 / 1
LCM(28109,28115) = 790284535

Least Common Multiple (LCM) of 28109 and 28115 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 28109 and 28115. First we will calculate the prime factors of 28109 and 28115.

Prime Factorization of 28109

Prime Factorization of 28115

Now multiplying the highest exponent prime factors to calculate the LCM of 28109 and 28115.

LCM(28109,28115) = 28109¹ × 5¹ × 5623¹
LCM(28109,28115) = 790284535