What is the Least Common Multiple of 17643 and 17661?

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 17643 and 17661 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 17643 and 17661, than apply into the LCM equation.

GCF(17643,17661) = 3
LCM(17643,17661) = ( 17643 × 17661) / 3
LCM(17643,17661) = 311593023 / 3
LCM(17643,17661) = 103864341

Least Common Multiple (LCM) of 17643 and 17661 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 17643 and 17661. First we will calculate the prime factors of 17643 and 17661.

Prime Factorization of 17643

Prime Factorization of 17661

Now multiplying the highest exponent prime factors to calculate the LCM of 17643 and 17661.

LCM(17643,17661) = 3¹ × 5881¹ × 7¹ × 29²
LCM(17643,17661) = 103864341