What is the Least Common Multiple of 31785 and 31805?

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 31785 and 31805 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 31785 and 31805, than apply into the LCM equation.

GCF(31785,31805) = 5
LCM(31785,31805) = ( 31785 × 31805) / 5
LCM(31785,31805) = 1010921925 / 5
LCM(31785,31805) = 202184385

Least Common Multiple (LCM) of 31785 and 31805 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 31785 and 31805. First we will calculate the prime factors of 31785 and 31805.

Prime Factorization of 31785

Prime Factorization of 31805

Now multiplying the highest exponent prime factors to calculate the LCM of 31785 and 31805.

LCM(31785,31805) = 3¹ × 5¹ × 13¹ × 163¹ × 6361¹
LCM(31785,31805) = 202184385