What is the Least Common Multiple of 51981 and 51987?

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 51981 and 51987 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 51981 and 51987, than apply into the LCM equation.

GCF(51981,51987) = 3
LCM(51981,51987) = ( 51981 × 51987) / 3
LCM(51981,51987) = 2702336247 / 3
LCM(51981,51987) = 900778749

Least Common Multiple (LCM) of 51981 and 51987 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 51981 and 51987. First we will calculate the prime factors of 51981 and 51987.

Prime Factorization of 51981

Prime Factorization of 51987

Now multiplying the highest exponent prime factors to calculate the LCM of 51981 and 51987.

LCM(51981,51987) = 3¹ × 17327¹ × 13¹ × 31¹ × 43¹
LCM(51981,51987) = 900778749