What is the Least Common Multiple of 81878 and 81886?

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 81878 and 81886 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81878 and 81886, than apply into the LCM equation.

GCF(81878,81886) = 2
LCM(81878,81886) = ( 81878 × 81886) / 2
LCM(81878,81886) = 6704661908 / 2
LCM(81878,81886) = 3352330954

Least Common Multiple (LCM) of 81878 and 81886 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81878 and 81886. First we will calculate the prime factors of 81878 and 81886.

Prime Factorization of 81878

Prime Factorization of 81886

Now multiplying the highest exponent prime factors to calculate the LCM of 81878 and 81886.

LCM(81878,81886) = 2¹ × 40939¹ × 7¹ × 5849¹
LCM(81878,81886) = 3352330954