What is the Least Common Multiple of 1531 and 1543?

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 1531 and 1543 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1531 and 1543, than apply into the LCM equation.

GCF(1531,1543) = 1
LCM(1531,1543) = ( 1531 × 1543) / 1
LCM(1531,1543) = 2362333 / 1
LCM(1531,1543) = 2362333

Least Common Multiple (LCM) of 1531 and 1543 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 1531 and 1543. First we will calculate the prime factors of 1531 and 1543.

Prime Factorization of 1531

Prime Factorization of 1543

Now multiplying the highest exponent prime factors to calculate the LCM of 1531 and 1543.

LCM(1531,1543) = 1531¹ × 1543¹
LCM(1531,1543) = 2362333