What is the Least Common Multiple of 39966 and 39978?

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 39966 and 39978 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 39966 and 39978, than apply into the LCM equation.

GCF(39966,39978) = 6
LCM(39966,39978) = ( 39966 × 39978) / 6
LCM(39966,39978) = 1597760748 / 6
LCM(39966,39978) = 266293458

Least Common Multiple (LCM) of 39966 and 39978 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 39966 and 39978. First we will calculate the prime factors of 39966 and 39978.

Prime Factorization of 39966

Prime Factorization of 39978

Now multiplying the highest exponent prime factors to calculate the LCM of 39966 and 39978.

LCM(39966,39978) = 2¹ × 3² × 6661¹ × 2221¹
LCM(39966,39978) = 266293458