What is the Least Common Multiple of 80715 and 80721?

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 80715 and 80721 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 80715 and 80721, than apply into the LCM equation.

GCF(80715,80721) = 3
LCM(80715,80721) = ( 80715 × 80721) / 3
LCM(80715,80721) = 6515395515 / 3
LCM(80715,80721) = 2171798505

Least Common Multiple (LCM) of 80715 and 80721 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 80715 and 80721. First we will calculate the prime factors of 80715 and 80721.

Prime Factorization of 80715

Prime Factorization of 80721

Now multiplying the highest exponent prime factors to calculate the LCM of 80715 and 80721.

LCM(80715,80721) = 3² × 5¹ × 5381¹ × 8969¹
LCM(80715,80721) = 2171798505