What is the Least Common Multiple of 20002 and 20021?

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 20002 and 20021 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20002 and 20021, than apply into the LCM equation.

GCF(20002,20021) = 1
LCM(20002,20021) = ( 20002 × 20021) / 1
LCM(20002,20021) = 400460042 / 1
LCM(20002,20021) = 400460042

Least Common Multiple (LCM) of 20002 and 20021 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20002 and 20021. First we will calculate the prime factors of 20002 and 20021.

Prime Factorization of 20002

Prime Factorization of 20021

Now multiplying the highest exponent prime factors to calculate the LCM of 20002 and 20021.

LCM(20002,20021) = 2¹ × 73¹ × 137¹ × 20021¹
LCM(20002,20021) = 400460042