What is the Least Common Multiple of 81585 and 81605?

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 81585 and 81605 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81585 and 81605, than apply into the LCM equation.

GCF(81585,81605) = 5
LCM(81585,81605) = ( 81585 × 81605) / 5
LCM(81585,81605) = 6657743925 / 5
LCM(81585,81605) = 1331548785

Least Common Multiple (LCM) of 81585 and 81605 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81585 and 81605. First we will calculate the prime factors of 81585 and 81605.

Prime Factorization of 81585

Prime Factorization of 81605

Now multiplying the highest exponent prime factors to calculate the LCM of 81585 and 81605.

LCM(81585,81605) = 3² × 5¹ × 7² × 37¹ × 19¹ × 859¹
LCM(81585,81605) = 1331548785