What is the Least Common Multiple of 67981 and 67993?

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 67981 and 67993 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 67981 and 67993, than apply into the LCM equation.

GCF(67981,67993) = 1
LCM(67981,67993) = ( 67981 × 67993) / 1
LCM(67981,67993) = 4622232133 / 1
LCM(67981,67993) = 4622232133

Least Common Multiple (LCM) of 67981 and 67993 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 67981 and 67993. First we will calculate the prime factors of 67981 and 67993.

Prime Factorization of 67981

Prime Factorization of 67993

Now multiplying the highest exponent prime factors to calculate the LCM of 67981 and 67993.

LCM(67981,67993) = 157¹ × 433¹ × 67993¹
LCM(67981,67993) = 4622232133