What is the Least Common Multiple of 31105 and 31115?

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 31105 and 31115 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 31105 and 31115, than apply into the LCM equation.

GCF(31105,31115) = 5
LCM(31105,31115) = ( 31105 × 31115) / 5
LCM(31105,31115) = 967832075 / 5
LCM(31105,31115) = 193566415

Least Common Multiple (LCM) of 31105 and 31115 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 31105 and 31115. First we will calculate the prime factors of 31105 and 31115.

Prime Factorization of 31105

Prime Factorization of 31115

Now multiplying the highest exponent prime factors to calculate the LCM of 31105 and 31115.

LCM(31105,31115) = 5¹ × 6221¹ × 7² × 127¹
LCM(31105,31115) = 193566415