What is the Least Common Multiple of 17621 and 17639?

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 17621 and 17639 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 17621 and 17639, than apply into the LCM equation.

GCF(17621,17639) = 1
LCM(17621,17639) = ( 17621 × 17639) / 1
LCM(17621,17639) = 310816819 / 1
LCM(17621,17639) = 310816819

Least Common Multiple (LCM) of 17621 and 17639 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 17621 and 17639. First we will calculate the prime factors of 17621 and 17639.

Prime Factorization of 17621

Prime Factorization of 17639

Now multiplying the highest exponent prime factors to calculate the LCM of 17621 and 17639.

LCM(17621,17639) = 67¹ × 263¹ × 31¹ × 569¹
LCM(17621,17639) = 310816819