GCF and LCM Calculator Logo

What is the Least Common Multiple of 15981 and 15988?

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 15981 and 15988 is 36500604.

LCM(15981,15988) = 36500604

LCM Calculator and
and

Least Common Multiple of 15981 and 15988 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 15981 and 15988, than apply into the LCM equation.

GCF(15981,15988) = 7
LCM(15981,15988) = ( 15981 × 15988) / 7
LCM(15981,15988) = 255504228 / 7
LCM(15981,15988) = 36500604

Least Common Multiple (LCM) of 15981 and 15988 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 15981 and 15988. First we will calculate the prime factors of 15981 and 15988.

Prime Factorization of 15981

Prime factors of 15981 are 3, 7, 761. Prime factorization of 15981 in exponential form is:

15981 = 31 × 71 × 7611

Prime Factorization of 15988

Prime factors of 15988 are 2, 7, 571. Prime factorization of 15988 in exponential form is:

15988 = 22 × 71 × 5711

Now multiplying the highest exponent prime factors to calculate the LCM of 15981 and 15988.

LCM(15981,15988) = 31 × 71 × 7611 × 22 × 5711
LCM(15981,15988) = 36500604