What is the Least Common Multiple of 42788 and 42805?

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 42788 and 42805 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 42788 and 42805, than apply into the LCM equation.

GCF(42788,42805) = 1
LCM(42788,42805) = ( 42788 × 42805) / 1
LCM(42788,42805) = 1831540340 / 1
LCM(42788,42805) = 1831540340

Least Common Multiple (LCM) of 42788 and 42805 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 42788 and 42805. First we will calculate the prime factors of 42788 and 42805.

Prime Factorization of 42788

Prime Factorization of 42805

Now multiplying the highest exponent prime factors to calculate the LCM of 42788 and 42805.

LCM(42788,42805) = 2² × 19¹ × 563¹ × 5¹ × 7¹ × 1223¹
LCM(42788,42805) = 1831540340