What is the Least Common Multiple of 31290 and 31309?

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 31290 and 31309 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 31290 and 31309, than apply into the LCM equation.

GCF(31290,31309) = 1
LCM(31290,31309) = ( 31290 × 31309) / 1
LCM(31290,31309) = 979658610 / 1
LCM(31290,31309) = 979658610

Least Common Multiple (LCM) of 31290 and 31309 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 31290 and 31309. First we will calculate the prime factors of 31290 and 31309.

Prime Factorization of 31290

Prime Factorization of 31309

Now multiplying the highest exponent prime factors to calculate the LCM of 31290 and 31309.

LCM(31290,31309) = 2¹ × 3¹ × 5¹ × 7¹ × 149¹ × 131¹ × 239¹
LCM(31290,31309) = 979658610