What is the Least Common Multiple of 68890 and 68905?

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 68890 and 68905 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 68890 and 68905, than apply into the LCM equation.

GCF(68890,68905) = 5
LCM(68890,68905) = ( 68890 × 68905) / 5
LCM(68890,68905) = 4746865450 / 5
LCM(68890,68905) = 949373090

Least Common Multiple (LCM) of 68890 and 68905 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 68890 and 68905. First we will calculate the prime factors of 68890 and 68905.

Prime Factorization of 68890

Prime Factorization of 68905

Now multiplying the highest exponent prime factors to calculate the LCM of 68890 and 68905.

LCM(68890,68905) = 2¹ × 5¹ × 83² × 13781¹
LCM(68890,68905) = 949373090