What is the Least Common Multiple of 11805 and 11821?

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 11805 and 11821 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 11805 and 11821, than apply into the LCM equation.

GCF(11805,11821) = 1
LCM(11805,11821) = ( 11805 × 11821) / 1
LCM(11805,11821) = 139546905 / 1
LCM(11805,11821) = 139546905

Least Common Multiple (LCM) of 11805 and 11821 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 11805 and 11821. First we will calculate the prime factors of 11805 and 11821.

Prime Factorization of 11805

Prime Factorization of 11821

Now multiplying the highest exponent prime factors to calculate the LCM of 11805 and 11821.

LCM(11805,11821) = 3¹ × 5¹ × 787¹ × 11821¹
LCM(11805,11821) = 139546905