What is the Least Common Multiple of 31570 and 31585?

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 31570 and 31585 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 31570 and 31585, than apply into the LCM equation.

GCF(31570,31585) = 5
LCM(31570,31585) = ( 31570 × 31585) / 5
LCM(31570,31585) = 997138450 / 5
LCM(31570,31585) = 199427690

Least Common Multiple (LCM) of 31570 and 31585 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 31570 and 31585. First we will calculate the prime factors of 31570 and 31585.

Prime Factorization of 31570

Prime Factorization of 31585

Now multiplying the highest exponent prime factors to calculate the LCM of 31570 and 31585.

LCM(31570,31585) = 2¹ × 5¹ × 7¹ × 11¹ × 41¹ × 6317¹
LCM(31570,31585) = 199427690