GCF and LCM Calculator Logo

What is the Least Common Multiple of 15984 and 15990?

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 15984 and 15990 is 42597360.

LCM(15984,15990) = 42597360

LCM Calculator and
and

Least Common Multiple of 15984 and 15990 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 15984 and 15990, than apply into the LCM equation.

GCF(15984,15990) = 6
LCM(15984,15990) = ( 15984 × 15990) / 6
LCM(15984,15990) = 255584160 / 6
LCM(15984,15990) = 42597360

Least Common Multiple (LCM) of 15984 and 15990 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 15984 and 15990. First we will calculate the prime factors of 15984 and 15990.

Prime Factorization of 15984

Prime factors of 15984 are 2, 3, 37. Prime factorization of 15984 in exponential form is:

15984 = 24 × 33 × 371

Prime Factorization of 15990

Prime factors of 15990 are 2, 3, 5, 13, 41. Prime factorization of 15990 in exponential form is:

15990 = 21 × 31 × 51 × 131 × 411

Now multiplying the highest exponent prime factors to calculate the LCM of 15984 and 15990.

LCM(15984,15990) = 24 × 33 × 371 × 51 × 131 × 411
LCM(15984,15990) = 42597360