What is the Least Common Multiple of 17781 and 17785?

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 17781 and 17785 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 17781 and 17785, than apply into the LCM equation.

GCF(17781,17785) = 1
LCM(17781,17785) = ( 17781 × 17785) / 1
LCM(17781,17785) = 316235085 / 1
LCM(17781,17785) = 316235085

Least Common Multiple (LCM) of 17781 and 17785 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 17781 and 17785. First we will calculate the prime factors of 17781 and 17785.

Prime Factorization of 17781

Prime Factorization of 17785

Now multiplying the highest exponent prime factors to calculate the LCM of 17781 and 17785.

LCM(17781,17785) = 3¹ × 5927¹ × 5¹ × 3557¹
LCM(17781,17785) = 316235085