What is the Least Common Multiple of 821 and 834?

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 821 and 834 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 821 and 834, than apply into the LCM equation.

GCF(821,834) = 1
LCM(821,834) = ( 821 × 834) / 1
LCM(821,834) = 684714 / 1
LCM(821,834) = 684714

Least Common Multiple (LCM) of 821 and 834 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 821 and 834. First we will calculate the prime factors of 821 and 834.

Prime Factorization of 821

Prime Factorization of 834

Now multiplying the highest exponent prime factors to calculate the LCM of 821 and 834.

LCM(821,834) = 821¹ × 2¹ × 3¹ × 139¹
LCM(821,834) = 684714