What is the Least Common Multiple of 68540 and 68555?

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 68540 and 68555 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 68540 and 68555, than apply into the LCM equation.

GCF(68540,68555) = 5
LCM(68540,68555) = ( 68540 × 68555) / 5
LCM(68540,68555) = 4698759700 / 5
LCM(68540,68555) = 939751940

Least Common Multiple (LCM) of 68540 and 68555 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 68540 and 68555. First we will calculate the prime factors of 68540 and 68555.

Prime Factorization of 68540

Prime Factorization of 68555

Now multiplying the highest exponent prime factors to calculate the LCM of 68540 and 68555.

LCM(68540,68555) = 2² × 5¹ × 23¹ × 149¹ × 13711¹
LCM(68540,68555) = 939751940