What is the Least Common Multiple of 3997 and 4013?

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 3997 and 4013 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 3997 and 4013, than apply into the LCM equation.

GCF(3997,4013) = 1
LCM(3997,4013) = ( 3997 × 4013) / 1
LCM(3997,4013) = 16039961 / 1
LCM(3997,4013) = 16039961

Least Common Multiple (LCM) of 3997 and 4013 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 3997 and 4013. First we will calculate the prime factors of 3997 and 4013.

Prime Factorization of 3997

Prime Factorization of 4013

Now multiplying the highest exponent prime factors to calculate the LCM of 3997 and 4013.

LCM(3997,4013) = 7¹ × 571¹ × 4013¹
LCM(3997,4013) = 16039961