What is the Least Common Multiple of 81809 and 81818?

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 81809 and 81818 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81809 and 81818, than apply into the LCM equation.

GCF(81809,81818) = 1
LCM(81809,81818) = ( 81809 × 81818) / 1
LCM(81809,81818) = 6693448762 / 1
LCM(81809,81818) = 6693448762

Least Common Multiple (LCM) of 81809 and 81818 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81809 and 81818. First we will calculate the prime factors of 81809 and 81818.

Prime Factorization of 81809

Prime Factorization of 81818

Now multiplying the highest exponent prime factors to calculate the LCM of 81809 and 81818.

LCM(81809,81818) = 7¹ × 13¹ × 29¹ × 31¹ × 2¹ × 11¹ × 3719¹
LCM(81809,81818) = 6693448762