What is the Least Common Multiple of 70003 and 70021?

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 70003 and 70021 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 70003 and 70021, than apply into the LCM equation.

GCF(70003,70021) = 1
LCM(70003,70021) = ( 70003 × 70021) / 1
LCM(70003,70021) = 4901680063 / 1
LCM(70003,70021) = 4901680063

Least Common Multiple (LCM) of 70003 and 70021 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 70003 and 70021. First we will calculate the prime factors of 70003 and 70021.

Prime Factorization of 70003

Prime Factorization of 70021

Now multiplying the highest exponent prime factors to calculate the LCM of 70003 and 70021.

LCM(70003,70021) = 70003¹ × 7² × 1429¹
LCM(70003,70021) = 4901680063