What is the Least Common Multiple of 42181 and 42191?

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 42181 and 42191 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 42181 and 42191, than apply into the LCM equation.

GCF(42181,42191) = 1
LCM(42181,42191) = ( 42181 × 42191) / 1
LCM(42181,42191) = 1779658571 / 1
LCM(42181,42191) = 1779658571

Least Common Multiple (LCM) of 42181 and 42191 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 42181 and 42191. First we will calculate the prime factors of 42181 and 42191.

Prime Factorization of 42181

Prime Factorization of 42191

Now multiplying the highest exponent prime factors to calculate the LCM of 42181 and 42191.

LCM(42181,42191) = 42181¹ × 31¹ × 1361¹
LCM(42181,42191) = 1779658571