What is the Least Common Multiple of 78423 and 78431?

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 78423 and 78431 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 78423 and 78431, than apply into the LCM equation.

GCF(78423,78431) = 1
LCM(78423,78431) = ( 78423 × 78431) / 1
LCM(78423,78431) = 6150794313 / 1
LCM(78423,78431) = 6150794313

Least Common Multiple (LCM) of 78423 and 78431 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 78423 and 78431. First we will calculate the prime factors of 78423 and 78431.

Prime Factorization of 78423

Prime Factorization of 78431

Now multiplying the highest exponent prime factors to calculate the LCM of 78423 and 78431.

LCM(78423,78431) = 3¹ × 26141¹ × 107¹ × 733¹
LCM(78423,78431) = 6150794313