What is the Least Common Multiple of 31105 and 31120?

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 31120 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 31120, than apply into the LCM equation.

GCF(31105,31120) = 5
LCM(31105,31120) = ( 31105 × 31120) / 5
LCM(31105,31120) = 967987600 / 5
LCM(31105,31120) = 193597520

Least Common Multiple (LCM) of 31105 and 31120 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 31105 and 31120. First we will calculate the prime factors of 31105 and 31120.

Prime Factorization of 31105

Prime Factorization of 31120

Now multiplying the highest exponent prime factors to calculate the LCM of 31105 and 31120.

LCM(31105,31120) = 5¹ × 6221¹ × 2⁴ × 389¹
LCM(31105,31120) = 193597520