What is the Least Common Multiple of 71400 and 71405?

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 71400 and 71405 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 71400 and 71405, than apply into the LCM equation.

GCF(71400,71405) = 5
LCM(71400,71405) = ( 71400 × 71405) / 5
LCM(71400,71405) = 5098317000 / 5
LCM(71400,71405) = 1019663400

Least Common Multiple (LCM) of 71400 and 71405 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 71400 and 71405. First we will calculate the prime factors of 71400 and 71405.

Prime Factorization of 71400

Prime Factorization of 71405

Now multiplying the highest exponent prime factors to calculate the LCM of 71400 and 71405.

LCM(71400,71405) = 2³ × 3¹ × 5² × 7¹ × 17¹ × 14281¹
LCM(71400,71405) = 1019663400