What is the Least Common Multiple of 78643 and 78659?

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 78643 and 78659 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 78643 and 78659, than apply into the LCM equation.

GCF(78643,78659) = 1
LCM(78643,78659) = ( 78643 × 78659) / 1
LCM(78643,78659) = 6185979737 / 1
LCM(78643,78659) = 6185979737

Least Common Multiple (LCM) of 78643 and 78659 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 78643 and 78659. First we will calculate the prime factors of 78643 and 78659.

Prime Factorization of 78643

Prime Factorization of 78659

Now multiplying the highest exponent prime factors to calculate the LCM of 78643 and 78659.

LCM(78643,78659) = 78643¹ × 7¹ × 17¹ × 661¹
LCM(78643,78659) = 6185979737