What is the Least Common Multiple of 67972 and 67981?

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 67972 and 67981 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 67972 and 67981, than apply into the LCM equation.

GCF(67972,67981) = 1
LCM(67972,67981) = ( 67972 × 67981) / 1
LCM(67972,67981) = 4620804532 / 1
LCM(67972,67981) = 4620804532

Least Common Multiple (LCM) of 67972 and 67981 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 67972 and 67981. First we will calculate the prime factors of 67972 and 67981.

Prime Factorization of 67972

Prime Factorization of 67981

Now multiplying the highest exponent prime factors to calculate the LCM of 67972 and 67981.

LCM(67972,67981) = 2² × 16993¹ × 157¹ × 433¹
LCM(67972,67981) = 4620804532