What is the Least Common Multiple of 65521 and 65528?

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 65521 and 65528 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 65521 and 65528, than apply into the LCM equation.

GCF(65521,65528) = 1
LCM(65521,65528) = ( 65521 × 65528) / 1
LCM(65521,65528) = 4293460088 / 1
LCM(65521,65528) = 4293460088

Least Common Multiple (LCM) of 65521 and 65528 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 65521 and 65528. First we will calculate the prime factors of 65521 and 65528.

Prime Factorization of 65521

Prime Factorization of 65528

Now multiplying the highest exponent prime factors to calculate the LCM of 65521 and 65528.

LCM(65521,65528) = 65521¹ × 2³ × 8191¹
LCM(65521,65528) = 4293460088