What is the Least Common Multiple of 39440 and 39457?

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 39440 and 39457 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 39440 and 39457, than apply into the LCM equation.

GCF(39440,39457) = 17
LCM(39440,39457) = ( 39440 × 39457) / 17
LCM(39440,39457) = 1556184080 / 17
LCM(39440,39457) = 91540240

Least Common Multiple (LCM) of 39440 and 39457 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 39440 and 39457. First we will calculate the prime factors of 39440 and 39457.

Prime Factorization of 39440

Prime Factorization of 39457

Now multiplying the highest exponent prime factors to calculate the LCM of 39440 and 39457.

LCM(39440,39457) = 2⁴ × 5¹ × 17¹ × 29¹ × 11¹ × 211¹
LCM(39440,39457) = 91540240