What is the Least Common Multiple of 3543 and 3555?

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 3543 and 3555 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 3543 and 3555, than apply into the LCM equation.

GCF(3543,3555) = 3
LCM(3543,3555) = ( 3543 × 3555) / 3
LCM(3543,3555) = 12595365 / 3
LCM(3543,3555) = 4198455

Least Common Multiple (LCM) of 3543 and 3555 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 3543 and 3555. First we will calculate the prime factors of 3543 and 3555.

Prime Factorization of 3543

Prime Factorization of 3555

Now multiplying the highest exponent prime factors to calculate the LCM of 3543 and 3555.

LCM(3543,3555) = 3² × 1181¹ × 5¹ × 79¹
LCM(3543,3555) = 4198455