What is the Least Common Multiple of 81009 and 81013?

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 81009 and 81013 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81009 and 81013, than apply into the LCM equation.

GCF(81009,81013) = 1
LCM(81009,81013) = ( 81009 × 81013) / 1
LCM(81009,81013) = 6562782117 / 1
LCM(81009,81013) = 6562782117

Least Common Multiple (LCM) of 81009 and 81013 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81009 and 81013. First we will calculate the prime factors of 81009 and 81013.

Prime Factorization of 81009

Prime Factorization of 81013

Now multiplying the highest exponent prime factors to calculate the LCM of 81009 and 81013.

LCM(81009,81013) = 3² × 9001¹ × 81013¹
LCM(81009,81013) = 6562782117