What is the Least Common Multiple of 15975 and 15981?

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 15975 and 15981 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 15975 and 15981, than apply into the LCM equation.

GCF(15975,15981) = 3
LCM(15975,15981) = ( 15975 × 15981) / 3
LCM(15975,15981) = 255296475 / 3
LCM(15975,15981) = 85098825

Least Common Multiple (LCM) of 15975 and 15981 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 15975 and 15981. First we will calculate the prime factors of 15975 and 15981.

Prime Factorization of 15975

Prime Factorization of 15981

Now multiplying the highest exponent prime factors to calculate the LCM of 15975 and 15981.

LCM(15975,15981) = 3² × 5² × 71¹ × 7¹ × 761¹
LCM(15975,15981) = 85098825