What is the Least Common Multiple of 40621 and 40639?

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 40621 and 40639 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 40621 and 40639, than apply into the LCM equation.

GCF(40621,40639) = 1
LCM(40621,40639) = ( 40621 × 40639) / 1
LCM(40621,40639) = 1650796819 / 1
LCM(40621,40639) = 1650796819

Least Common Multiple (LCM) of 40621 and 40639 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 40621 and 40639. First we will calculate the prime factors of 40621 and 40639.

Prime Factorization of 40621

Prime Factorization of 40639

Now multiplying the highest exponent prime factors to calculate the LCM of 40621 and 40639.

LCM(40621,40639) = 7² × 829¹ × 40639¹
LCM(40621,40639) = 1650796819