What is the Least Common Multiple of 71840 and 71855?

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 71840 and 71855 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 71840 and 71855, than apply into the LCM equation.

GCF(71840,71855) = 5
LCM(71840,71855) = ( 71840 × 71855) / 5
LCM(71840,71855) = 5162063200 / 5
LCM(71840,71855) = 1032412640

Least Common Multiple (LCM) of 71840 and 71855 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 71840 and 71855. First we will calculate the prime factors of 71840 and 71855.

Prime Factorization of 71840

Prime Factorization of 71855

Now multiplying the highest exponent prime factors to calculate the LCM of 71840 and 71855.

LCM(71840,71855) = 2⁵ × 5¹ × 449¹ × 7¹ × 2053¹
LCM(71840,71855) = 1032412640