What is the Least Common Multiple of 7878 and 7891?

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 7878 and 7891 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7878 and 7891, than apply into the LCM equation.

GCF(7878,7891) = 13
LCM(7878,7891) = ( 7878 × 7891) / 13
LCM(7878,7891) = 62165298 / 13
LCM(7878,7891) = 4781946

Least Common Multiple (LCM) of 7878 and 7891 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 7878 and 7891. First we will calculate the prime factors of 7878 and 7891.

Prime Factorization of 7878

Prime Factorization of 7891

Now multiplying the highest exponent prime factors to calculate the LCM of 7878 and 7891.

LCM(7878,7891) = 2¹ × 3¹ × 13¹ × 101¹ × 607¹
LCM(7878,7891) = 4781946