What is the Least Common Multiple of 31885 and 31905?

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 31885 and 31905 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 31885 and 31905, than apply into the LCM equation.

GCF(31885,31905) = 5
LCM(31885,31905) = ( 31885 × 31905) / 5
LCM(31885,31905) = 1017290925 / 5
LCM(31885,31905) = 203458185

Least Common Multiple (LCM) of 31885 and 31905 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 31885 and 31905. First we will calculate the prime factors of 31885 and 31905.

Prime Factorization of 31885

Prime Factorization of 31905

Now multiplying the highest exponent prime factors to calculate the LCM of 31885 and 31905.

LCM(31885,31905) = 5¹ × 7¹ × 911¹ × 3² × 709¹
LCM(31885,31905) = 203458185