What is the Least Common Multiple of 11643 and 11661?

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 11643 and 11661 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 11643 and 11661, than apply into the LCM equation.

GCF(11643,11661) = 3
LCM(11643,11661) = ( 11643 × 11661) / 3
LCM(11643,11661) = 135769023 / 3
LCM(11643,11661) = 45256341

Least Common Multiple (LCM) of 11643 and 11661 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 11643 and 11661. First we will calculate the prime factors of 11643 and 11661.

Prime Factorization of 11643

Prime Factorization of 11661

Now multiplying the highest exponent prime factors to calculate the LCM of 11643 and 11661.

LCM(11643,11661) = 3¹ × 3881¹ × 13² × 23¹
LCM(11643,11661) = 45256341