What is the Least Common Multiple of 67981 and 67990?

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 67990 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 67990, than apply into the LCM equation.

GCF(67981,67990) = 1
LCM(67981,67990) = ( 67981 × 67990) / 1
LCM(67981,67990) = 4622028190 / 1
LCM(67981,67990) = 4622028190

Least Common Multiple (LCM) of 67981 and 67990 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 67981 and 67990. First we will calculate the prime factors of 67981 and 67990.

Prime Factorization of 67981

Prime Factorization of 67990

Now multiplying the highest exponent prime factors to calculate the LCM of 67981 and 67990.

LCM(67981,67990) = 157¹ × 433¹ × 2¹ × 5¹ × 13¹ × 523¹
LCM(67981,67990) = 4622028190