What is the Least Common Multiple of 79987 and 80005?

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 79987 and 80005 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 79987 and 80005, than apply into the LCM equation.

GCF(79987,80005) = 1
LCM(79987,80005) = ( 79987 × 80005) / 1
LCM(79987,80005) = 6399359935 / 1
LCM(79987,80005) = 6399359935

Least Common Multiple (LCM) of 79987 and 80005 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 79987 and 80005. First we will calculate the prime factors of 79987 and 80005.

Prime Factorization of 79987

Prime Factorization of 80005

Now multiplying the highest exponent prime factors to calculate the LCM of 79987 and 80005.

LCM(79987,80005) = 79987¹ × 5¹ × 16001¹
LCM(79987,80005) = 6399359935