What is the Least Common Multiple of 65421 and 65433?

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 65421 and 65433 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 65421 and 65433, than apply into the LCM equation.

GCF(65421,65433) = 3
LCM(65421,65433) = ( 65421 × 65433) / 3
LCM(65421,65433) = 4280692293 / 3
LCM(65421,65433) = 1426897431

Least Common Multiple (LCM) of 65421 and 65433 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 65421 and 65433. First we will calculate the prime factors of 65421 and 65433.

Prime Factorization of 65421

Prime Factorization of 65433

Now multiplying the highest exponent prime factors to calculate the LCM of 65421 and 65433.

LCM(65421,65433) = 3³ × 2423¹ × 17¹ × 1283¹
LCM(65421,65433) = 1426897431