What is the Least Common Multiple of 70805 and 70820?

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 70805 and 70820 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 70805 and 70820, than apply into the LCM equation.

GCF(70805,70820) = 5
LCM(70805,70820) = ( 70805 × 70820) / 5
LCM(70805,70820) = 5014410100 / 5
LCM(70805,70820) = 1002882020

Least Common Multiple (LCM) of 70805 and 70820 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 70805 and 70820. First we will calculate the prime factors of 70805 and 70820.

Prime Factorization of 70805

Prime Factorization of 70820

Now multiplying the highest exponent prime factors to calculate the LCM of 70805 and 70820.

LCM(70805,70820) = 5¹ × 7² × 17² × 2² × 3541¹
LCM(70805,70820) = 1002882020