What is the Least Common Multiple of 81387 and 81391?

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 81387 and 81391 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81387 and 81391, than apply into the LCM equation.

GCF(81387,81391) = 1
LCM(81387,81391) = ( 81387 × 81391) / 1
LCM(81387,81391) = 6624169317 / 1
LCM(81387,81391) = 6624169317

Least Common Multiple (LCM) of 81387 and 81391 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81387 and 81391. First we will calculate the prime factors of 81387 and 81391.

Prime Factorization of 81387

Prime Factorization of 81391

Now multiplying the highest exponent prime factors to calculate the LCM of 81387 and 81391.

LCM(81387,81391) = 3² × 9043¹ × 199¹ × 409¹
LCM(81387,81391) = 6624169317