What is the Least Common Multiple of 42681 and 42687?

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 42681 and 42687 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 42681 and 42687, than apply into the LCM equation.

GCF(42681,42687) = 3
LCM(42681,42687) = ( 42681 × 42687) / 3
LCM(42681,42687) = 1821923847 / 3
LCM(42681,42687) = 607307949

Least Common Multiple (LCM) of 42681 and 42687 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 42681 and 42687. First we will calculate the prime factors of 42681 and 42687.

Prime Factorization of 42681

Prime Factorization of 42687

Now multiplying the highest exponent prime factors to calculate the LCM of 42681 and 42687.

LCM(42681,42687) = 3⁴ × 41¹ × 347¹ × 17¹ × 31¹
LCM(42681,42687) = 607307949