What is the Least Common Multiple of 31585 and 31605?

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 31585 and 31605 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 31585 and 31605, than apply into the LCM equation.

GCF(31585,31605) = 5
LCM(31585,31605) = ( 31585 × 31605) / 5
LCM(31585,31605) = 998243925 / 5
LCM(31585,31605) = 199648785

Least Common Multiple (LCM) of 31585 and 31605 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 31585 and 31605. First we will calculate the prime factors of 31585 and 31605.

Prime Factorization of 31585

Prime Factorization of 31605

Now multiplying the highest exponent prime factors to calculate the LCM of 31585 and 31605.

LCM(31585,31605) = 5¹ × 6317¹ × 3¹ × 7² × 43¹
LCM(31585,31605) = 199648785