What is the Least Common Multiple of 81287 and 81291?

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 81287 and 81291 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81287 and 81291, than apply into the LCM equation.

GCF(81287,81291) = 1
LCM(81287,81291) = ( 81287 × 81291) / 1
LCM(81287,81291) = 6607901517 / 1
LCM(81287,81291) = 6607901517

Least Common Multiple (LCM) of 81287 and 81291 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81287 and 81291. First we will calculate the prime factors of 81287 and 81291.

Prime Factorization of 81287

Prime Factorization of 81291

Now multiplying the highest exponent prime factors to calculate the LCM of 81287 and 81291.

LCM(81287,81291) = 29¹ × 2803¹ × 3¹ × 7³ × 79¹
LCM(81287,81291) = 6607901517