What is the Least Common Multiple of 27988 and 28006?

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 27988 and 28006 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 27988 and 28006, than apply into the LCM equation.

GCF(27988,28006) = 2
LCM(27988,28006) = ( 27988 × 28006) / 2
LCM(27988,28006) = 783831928 / 2
LCM(27988,28006) = 391915964

Least Common Multiple (LCM) of 27988 and 28006 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 27988 and 28006. First we will calculate the prime factors of 27988 and 28006.

Prime Factorization of 27988

Prime Factorization of 28006

Now multiplying the highest exponent prime factors to calculate the LCM of 27988 and 28006.

LCM(27988,28006) = 2² × 6997¹ × 11¹ × 19¹ × 67¹
LCM(27988,28006) = 391915964