What is the Least Common Multiple of 1581 and 1589?

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 1581 and 1589 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1581 and 1589, than apply into the LCM equation.

GCF(1581,1589) = 1
LCM(1581,1589) = ( 1581 × 1589) / 1
LCM(1581,1589) = 2512209 / 1
LCM(1581,1589) = 2512209

Least Common Multiple (LCM) of 1581 and 1589 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 1581 and 1589. First we will calculate the prime factors of 1581 and 1589.

Prime Factorization of 1581

Prime Factorization of 1589

Now multiplying the highest exponent prime factors to calculate the LCM of 1581 and 1589.

LCM(1581,1589) = 3¹ × 17¹ × 31¹ × 7¹ × 227¹
LCM(1581,1589) = 2512209