What is the Least Common Multiple of 28621 and 28639?

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 28621 and 28639 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 28621 and 28639, than apply into the LCM equation.

GCF(28621,28639) = 1
LCM(28621,28639) = ( 28621 × 28639) / 1
LCM(28621,28639) = 819676819 / 1
LCM(28621,28639) = 819676819

Least Common Multiple (LCM) of 28621 and 28639 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 28621 and 28639. First we will calculate the prime factors of 28621 and 28639.

Prime Factorization of 28621

Prime Factorization of 28639

Now multiplying the highest exponent prime factors to calculate the LCM of 28621 and 28639.

LCM(28621,28639) = 28621¹ × 13¹ × 2203¹
LCM(28621,28639) = 819676819