What is the Least Common Multiple of 42591 and 42605?

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 42591 and 42605 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 42591 and 42605, than apply into the LCM equation.

GCF(42591,42605) = 1
LCM(42591,42605) = ( 42591 × 42605) / 1
LCM(42591,42605) = 1814589555 / 1
LCM(42591,42605) = 1814589555

Least Common Multiple (LCM) of 42591 and 42605 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 42591 and 42605. First we will calculate the prime factors of 42591 and 42605.

Prime Factorization of 42591

Prime Factorization of 42605

Now multiplying the highest exponent prime factors to calculate the LCM of 42591 and 42605.

LCM(42591,42605) = 3¹ × 14197¹ × 5¹ × 8521¹
LCM(42591,42605) = 1814589555