What is the Least Common Multiple of 31409 and 31428?

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 31409 and 31428 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 31409 and 31428, than apply into the LCM equation.

GCF(31409,31428) = 1
LCM(31409,31428) = ( 31409 × 31428) / 1
LCM(31409,31428) = 987122052 / 1
LCM(31409,31428) = 987122052

Least Common Multiple (LCM) of 31409 and 31428 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 31409 and 31428. First we will calculate the prime factors of 31409 and 31428.

Prime Factorization of 31409

Prime Factorization of 31428

Now multiplying the highest exponent prime factors to calculate the LCM of 31409 and 31428.

LCM(31409,31428) = 7² × 641¹ × 2² × 3⁴ × 97¹
LCM(31409,31428) = 987122052