What is the Least Common Multiple of 3987 and 4001?

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 3987 and 4001 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 3987 and 4001, than apply into the LCM equation.

GCF(3987,4001) = 1
LCM(3987,4001) = ( 3987 × 4001) / 1
LCM(3987,4001) = 15951987 / 1
LCM(3987,4001) = 15951987

Least Common Multiple (LCM) of 3987 and 4001 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 3987 and 4001. First we will calculate the prime factors of 3987 and 4001.

Prime Factorization of 3987

Prime Factorization of 4001

Now multiplying the highest exponent prime factors to calculate the LCM of 3987 and 4001.

LCM(3987,4001) = 3² × 443¹ × 4001¹
LCM(3987,4001) = 15951987