What is the Least Common Multiple of 1143 and 1156?

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 1143 and 1156 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1143 and 1156, than apply into the LCM equation.

GCF(1143,1156) = 1
LCM(1143,1156) = ( 1143 × 1156) / 1
LCM(1143,1156) = 1321308 / 1
LCM(1143,1156) = 1321308

Least Common Multiple (LCM) of 1143 and 1156 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 1143 and 1156. First we will calculate the prime factors of 1143 and 1156.

Prime Factorization of 1143

Prime Factorization of 1156

Now multiplying the highest exponent prime factors to calculate the LCM of 1143 and 1156.

LCM(1143,1156) = 3² × 127¹ × 2² × 17²
LCM(1143,1156) = 1321308