What is the Least Common Multiple of 810 and 818?

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 810 and 818 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 810 and 818, than apply into the LCM equation.

GCF(810,818) = 2
LCM(810,818) = ( 810 × 818) / 2
LCM(810,818) = 662580 / 2
LCM(810,818) = 331290

Least Common Multiple (LCM) of 810 and 818 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 810 and 818. First we will calculate the prime factors of 810 and 818.

Prime Factorization of 810

Prime Factorization of 818

Now multiplying the highest exponent prime factors to calculate the LCM of 810 and 818.

LCM(810,818) = 2¹ × 3⁴ × 5¹ × 409¹
LCM(810,818) = 331290