What is the Least Common Multiple of 31440 and 31451?

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 31440 and 31451 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 31440 and 31451, than apply into the LCM equation.

GCF(31440,31451) = 1
LCM(31440,31451) = ( 31440 × 31451) / 1
LCM(31440,31451) = 988819440 / 1
LCM(31440,31451) = 988819440

Least Common Multiple (LCM) of 31440 and 31451 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 31440 and 31451. First we will calculate the prime factors of 31440 and 31451.

Prime Factorization of 31440

Prime Factorization of 31451

Now multiplying the highest exponent prime factors to calculate the LCM of 31440 and 31451.

LCM(31440,31451) = 2⁴ × 3¹ × 5¹ × 131¹ × 7¹ × 4493¹
LCM(31440,31451) = 988819440