What is the Least Common Multiple of 78431 and 78451?

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 78431 and 78451 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 78431 and 78451, than apply into the LCM equation.

GCF(78431,78451) = 1
LCM(78431,78451) = ( 78431 × 78451) / 1
LCM(78431,78451) = 6152990381 / 1
LCM(78431,78451) = 6152990381

Least Common Multiple (LCM) of 78431 and 78451 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 78431 and 78451. First we will calculate the prime factors of 78431 and 78451.

Prime Factorization of 78431

Prime Factorization of 78451

Now multiplying the highest exponent prime factors to calculate the LCM of 78431 and 78451.

LCM(78431,78451) = 107¹ × 733¹ × 19¹ × 4129¹
LCM(78431,78451) = 6152990381