What is the Least Common Multiple of 42615 and 42621?

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 42615 and 42621 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 42615 and 42621, than apply into the LCM equation.

GCF(42615,42621) = 3
LCM(42615,42621) = ( 42615 × 42621) / 3
LCM(42615,42621) = 1816293915 / 3
LCM(42615,42621) = 605431305

Least Common Multiple (LCM) of 42615 and 42621 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 42615 and 42621. First we will calculate the prime factors of 42615 and 42621.

Prime Factorization of 42615

Prime Factorization of 42621

Now multiplying the highest exponent prime factors to calculate the LCM of 42615 and 42621.

LCM(42615,42621) = 3² × 5¹ × 947¹ × 14207¹
LCM(42615,42621) = 605431305