What is the Least Common Multiple of 68421 and 68439?

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 68421 and 68439 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 68421 and 68439, than apply into the LCM equation.

GCF(68421,68439) = 3
LCM(68421,68439) = ( 68421 × 68439) / 3
LCM(68421,68439) = 4682664819 / 3
LCM(68421,68439) = 1560888273

Least Common Multiple (LCM) of 68421 and 68439 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 68421 and 68439. First we will calculate the prime factors of 68421 and 68439.

Prime Factorization of 68421

Prime Factorization of 68439

Now multiplying the highest exponent prime factors to calculate the LCM of 68421 and 68439.

LCM(68421,68439) = 3¹ × 22807¹ × 7¹ × 3259¹
LCM(68421,68439) = 1560888273