What is the Least Common Multiple of 2856 and 2865?

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 2856 and 2865 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 2856 and 2865, than apply into the LCM equation.

GCF(2856,2865) = 3
LCM(2856,2865) = ( 2856 × 2865) / 3
LCM(2856,2865) = 8182440 / 3
LCM(2856,2865) = 2727480

Least Common Multiple (LCM) of 2856 and 2865 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 2856 and 2865. First we will calculate the prime factors of 2856 and 2865.

Prime Factorization of 2856

Prime Factorization of 2865

Now multiplying the highest exponent prime factors to calculate the LCM of 2856 and 2865.

LCM(2856,2865) = 2³ × 3¹ × 7¹ × 17¹ × 5¹ × 191¹
LCM(2856,2865) = 2727480