What is the Least Common Multiple of 81871 and 81891?

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 81871 and 81891 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81871 and 81891, than apply into the LCM equation.

GCF(81871,81891) = 1
LCM(81871,81891) = ( 81871 × 81891) / 1
LCM(81871,81891) = 6704498061 / 1
LCM(81871,81891) = 6704498061

Least Common Multiple (LCM) of 81871 and 81891 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81871 and 81891. First we will calculate the prime factors of 81871 and 81891.

Prime Factorization of 81871

Prime Factorization of 81891

Now multiplying the highest exponent prime factors to calculate the LCM of 81871 and 81891.

LCM(81871,81891) = 19¹ × 31¹ × 139¹ × 3⁵ × 337¹
LCM(81871,81891) = 6704498061