What is the Least Common Multiple of 42857 and 42875?

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 42857 and 42875 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 42857 and 42875, than apply into the LCM equation.

GCF(42857,42875) = 1
LCM(42857,42875) = ( 42857 × 42875) / 1
LCM(42857,42875) = 1837493875 / 1
LCM(42857,42875) = 1837493875

Least Common Multiple (LCM) of 42857 and 42875 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 42857 and 42875. First we will calculate the prime factors of 42857 and 42875.

Prime Factorization of 42857

Prime Factorization of 42875

Now multiplying the highest exponent prime factors to calculate the LCM of 42857 and 42875.

LCM(42857,42875) = 17¹ × 2521¹ × 5³ × 7³
LCM(42857,42875) = 1837493875