What is the Least Common Multiple of 39642 and 39656?

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 39642 and 39656 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 39642 and 39656, than apply into the LCM equation.

GCF(39642,39656) = 2
LCM(39642,39656) = ( 39642 × 39656) / 2
LCM(39642,39656) = 1572043152 / 2
LCM(39642,39656) = 786021576

Least Common Multiple (LCM) of 39642 and 39656 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 39642 and 39656. First we will calculate the prime factors of 39642 and 39656.

Prime Factorization of 39642

Prime Factorization of 39656

Now multiplying the highest exponent prime factors to calculate the LCM of 39642 and 39656.

LCM(39642,39656) = 2³ × 3¹ × 6607¹ × 4957¹
LCM(39642,39656) = 786021576