What is the Least Common Multiple of 15643 and 15647?

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 15647 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 15647, than apply into the LCM equation.

GCF(15643,15647) = 1
LCM(15643,15647) = ( 15643 × 15647) / 1
LCM(15643,15647) = 244766021 / 1
LCM(15643,15647) = 244766021

Least Common Multiple (LCM) of 15643 and 15647 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 15643 and 15647. First we will calculate the prime factors of 15643 and 15647.

Prime Factorization of 15643

Prime Factorization of 15647

Now multiplying the highest exponent prime factors to calculate the LCM of 15643 and 15647.

LCM(15643,15647) = 15643¹ × 15647¹
LCM(15643,15647) = 244766021