What is the Least Common Multiple of 7845 and 7854?

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 7845 and 7854 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7845 and 7854, than apply into the LCM equation.

GCF(7845,7854) = 3
LCM(7845,7854) = ( 7845 × 7854) / 3
LCM(7845,7854) = 61614630 / 3
LCM(7845,7854) = 20538210

Least Common Multiple (LCM) of 7845 and 7854 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 7845 and 7854. First we will calculate the prime factors of 7845 and 7854.

Prime Factorization of 7845

Prime Factorization of 7854

Now multiplying the highest exponent prime factors to calculate the LCM of 7845 and 7854.

LCM(7845,7854) = 3¹ × 5¹ × 523¹ × 2¹ × 7¹ × 11¹ × 17¹
LCM(7845,7854) = 20538210