What is the Least Common Multiple of 65458 and 65478?

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 65458 and 65478 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 65458 and 65478, than apply into the LCM equation.

GCF(65458,65478) = 2
LCM(65458,65478) = ( 65458 × 65478) / 2
LCM(65458,65478) = 4286058924 / 2
LCM(65458,65478) = 2143029462

Least Common Multiple (LCM) of 65458 and 65478 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 65458 and 65478. First we will calculate the prime factors of 65458 and 65478.

Prime Factorization of 65458

Prime Factorization of 65478

Now multiplying the highest exponent prime factors to calculate the LCM of 65458 and 65478.

LCM(65458,65478) = 2¹ × 23¹ × 1423¹ × 3¹ × 7¹ × 1559¹
LCM(65458,65478) = 2143029462