What is the Least Common Multiple of 65421 and 65425?

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 65425 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 65425, than apply into the LCM equation.

GCF(65421,65425) = 1
LCM(65421,65425) = ( 65421 × 65425) / 1
LCM(65421,65425) = 4280168925 / 1
LCM(65421,65425) = 4280168925

Least Common Multiple (LCM) of 65421 and 65425 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 65421 and 65425. First we will calculate the prime factors of 65421 and 65425.

Prime Factorization of 65421

Prime Factorization of 65425

Now multiplying the highest exponent prime factors to calculate the LCM of 65421 and 65425.

LCM(65421,65425) = 3³ × 2423¹ × 5² × 2617¹
LCM(65421,65425) = 4280168925