What is the Least Common Multiple of 15643 and 15661?

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 15643 and 15661 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 15643 and 15661, than apply into the LCM equation.

GCF(15643,15661) = 1
LCM(15643,15661) = ( 15643 × 15661) / 1
LCM(15643,15661) = 244985023 / 1
LCM(15643,15661) = 244985023

Least Common Multiple (LCM) of 15643 and 15661 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 15643 and 15661. First we will calculate the prime factors of 15643 and 15661.

Prime Factorization of 15643

Prime Factorization of 15661

Now multiplying the highest exponent prime factors to calculate the LCM of 15643 and 15661.

LCM(15643,15661) = 15643¹ × 15661¹
LCM(15643,15661) = 244985023