What is the Least Common Multiple of 81398 and 81416?

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 81398 and 81416 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81398 and 81416, than apply into the LCM equation.

GCF(81398,81416) = 2
LCM(81398,81416) = ( 81398 × 81416) / 2
LCM(81398,81416) = 6627099568 / 2
LCM(81398,81416) = 3313549784

Least Common Multiple (LCM) of 81398 and 81416 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81398 and 81416. First we will calculate the prime factors of 81398 and 81416.

Prime Factorization of 81398

Prime Factorization of 81416

Now multiplying the highest exponent prime factors to calculate the LCM of 81398 and 81416.

LCM(81398,81416) = 2³ × 40699¹ × 10177¹
LCM(81398,81416) = 3313549784