What is the Least Common Multiple of 19686 and 19699?

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 19686 and 19699 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 19686 and 19699, than apply into the LCM equation.

GCF(19686,19699) = 1
LCM(19686,19699) = ( 19686 × 19699) / 1
LCM(19686,19699) = 387794514 / 1
LCM(19686,19699) = 387794514

Least Common Multiple (LCM) of 19686 and 19699 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 19686 and 19699. First we will calculate the prime factors of 19686 and 19699.

Prime Factorization of 19686

Prime Factorization of 19699

Now multiplying the highest exponent prime factors to calculate the LCM of 19686 and 19699.

LCM(19686,19699) = 2¹ × 3¹ × 17¹ × 193¹ × 19699¹
LCM(19686,19699) = 387794514