What is the Least Common Multiple of 18561 and 18570?

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 18561 and 18570 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 18561 and 18570, than apply into the LCM equation.

GCF(18561,18570) = 3
LCM(18561,18570) = ( 18561 × 18570) / 3
LCM(18561,18570) = 344677770 / 3
LCM(18561,18570) = 114892590

Least Common Multiple (LCM) of 18561 and 18570 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 18561 and 18570. First we will calculate the prime factors of 18561 and 18570.

Prime Factorization of 18561

Prime Factorization of 18570

Now multiplying the highest exponent prime factors to calculate the LCM of 18561 and 18570.

LCM(18561,18570) = 3¹ × 23¹ × 269¹ × 2¹ × 5¹ × 619¹
LCM(18561,18570) = 114892590