What is the Least Common Multiple of 42781 and 42788?

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 42781 and 42788 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 42781 and 42788, than apply into the LCM equation.

GCF(42781,42788) = 1
LCM(42781,42788) = ( 42781 × 42788) / 1
LCM(42781,42788) = 1830513428 / 1
LCM(42781,42788) = 1830513428

Least Common Multiple (LCM) of 42781 and 42788 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 42781 and 42788. First we will calculate the prime factors of 42781 and 42788.

Prime Factorization of 42781

Prime Factorization of 42788

Now multiplying the highest exponent prime factors to calculate the LCM of 42781 and 42788.

LCM(42781,42788) = 179¹ × 239¹ × 2² × 19¹ × 563¹
LCM(42781,42788) = 1830513428