What is the Least Common Multiple of 78860 and 78872?

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 78860 and 78872 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 78860 and 78872, than apply into the LCM equation.

GCF(78860,78872) = 4
LCM(78860,78872) = ( 78860 × 78872) / 4
LCM(78860,78872) = 6219845920 / 4
LCM(78860,78872) = 1554961480

Least Common Multiple (LCM) of 78860 and 78872 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 78860 and 78872. First we will calculate the prime factors of 78860 and 78872.

Prime Factorization of 78860

Prime Factorization of 78872

Now multiplying the highest exponent prime factors to calculate the LCM of 78860 and 78872.

LCM(78860,78872) = 2³ × 5¹ × 3943¹ × 9859¹
LCM(78860,78872) = 1554961480