What is the Least Common Multiple of 871 and 891?

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 871 and 891 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 871 and 891, than apply into the LCM equation.

GCF(871,891) = 1
LCM(871,891) = ( 871 × 891) / 1
LCM(871,891) = 776061 / 1
LCM(871,891) = 776061

Least Common Multiple (LCM) of 871 and 891 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 871 and 891. First we will calculate the prime factors of 871 and 891.

Prime Factorization of 871

Prime Factorization of 891

Now multiplying the highest exponent prime factors to calculate the LCM of 871 and 891.

LCM(871,891) = 13¹ × 67¹ × 3⁴ × 11¹
LCM(871,891) = 776061