GCF and LCM Calculator Logo

What is the Least Common Multiple of 4005 and 4015?

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 (LCM) of 4005 and 4015 is 3216015.

LCM(4005,4015) = 3216015

LCM Calculator and
and

Least Common Multiple of 4005 and 4015 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 4005 and 4015, than apply into the LCM equation.

GCF(4005,4015) = 5
LCM(4005,4015) = ( 4005 × 4015) / 5
LCM(4005,4015) = 16080075 / 5
LCM(4005,4015) = 3216015

Least Common Multiple (LCM) of 4005 and 4015 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 4005 and 4015. First we will calculate the prime factors of 4005 and 4015.

Prime Factorization of 4005

Prime factors of 4005 are 3, 5, 89. Prime factorization of 4005 in exponential form is:

4005 = 32 × 51 × 891

Prime Factorization of 4015

Prime factors of 4015 are 5, 11, 73. Prime factorization of 4015 in exponential form is:

4015 = 51 × 111 × 731

Now multiplying the highest exponent prime factors to calculate the LCM of 4005 and 4015.

LCM(4005,4015) = 32 × 51 × 891 × 111 × 731
LCM(4005,4015) = 3216015