What is the Least Common Multiple of 20503 and 20521?

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 20503 and 20521 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20503 and 20521, than apply into the LCM equation.

GCF(20503,20521) = 1
LCM(20503,20521) = ( 20503 × 20521) / 1
LCM(20503,20521) = 420742063 / 1
LCM(20503,20521) = 420742063

Least Common Multiple (LCM) of 20503 and 20521 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20503 and 20521. First we will calculate the prime factors of 20503 and 20521.

Prime Factorization of 20503

Prime Factorization of 20521

Now multiplying the highest exponent prime factors to calculate the LCM of 20503 and 20521.

LCM(20503,20521) = 7¹ × 29¹ × 101¹ × 20521¹
LCM(20503,20521) = 420742063