What is the Least Common Multiple of 20045 and 20057?

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 20045 and 20057 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20045 and 20057, than apply into the LCM equation.

GCF(20045,20057) = 1
LCM(20045,20057) = ( 20045 × 20057) / 1
LCM(20045,20057) = 402042565 / 1
LCM(20045,20057) = 402042565

Least Common Multiple (LCM) of 20045 and 20057 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20045 and 20057. First we will calculate the prime factors of 20045 and 20057.

Prime Factorization of 20045

Prime Factorization of 20057

Now multiplying the highest exponent prime factors to calculate the LCM of 20045 and 20057.

LCM(20045,20057) = 5¹ × 19¹ × 211¹ × 31¹ × 647¹
LCM(20045,20057) = 402042565