What is the Least Common Multiple of 68220 and 68238?

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 68220 and 68238 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 68220 and 68238, than apply into the LCM equation.

GCF(68220,68238) = 18
LCM(68220,68238) = ( 68220 × 68238) / 18
LCM(68220,68238) = 4655196360 / 18
LCM(68220,68238) = 258622020

Least Common Multiple (LCM) of 68220 and 68238 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 68220 and 68238. First we will calculate the prime factors of 68220 and 68238.

Prime Factorization of 68220

Prime Factorization of 68238

Now multiplying the highest exponent prime factors to calculate the LCM of 68220 and 68238.

LCM(68220,68238) = 2² × 3² × 5¹ × 379¹ × 17¹ × 223¹
LCM(68220,68238) = 258622020