What is the Least Common Multiple of 79860 and 79880?

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 79860 and 79880 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 79860 and 79880, than apply into the LCM equation.

GCF(79860,79880) = 20
LCM(79860,79880) = ( 79860 × 79880) / 20
LCM(79860,79880) = 6379216800 / 20
LCM(79860,79880) = 318960840

Least Common Multiple (LCM) of 79860 and 79880 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 79860 and 79880. First we will calculate the prime factors of 79860 and 79880.

Prime Factorization of 79860

Prime Factorization of 79880

Now multiplying the highest exponent prime factors to calculate the LCM of 79860 and 79880.

LCM(79860,79880) = 2³ × 3¹ × 5¹ × 11³ × 1997¹
LCM(79860,79880) = 318960840