What is the Least Common Multiple of 81278 and 81286?

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 81278 and 81286 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81278 and 81286, than apply into the LCM equation.

GCF(81278,81286) = 2
LCM(81278,81286) = ( 81278 × 81286) / 2
LCM(81278,81286) = 6606763508 / 2
LCM(81278,81286) = 3303381754

Least Common Multiple (LCM) of 81278 and 81286 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81278 and 81286. First we will calculate the prime factors of 81278 and 81286.

Prime Factorization of 81278

Prime Factorization of 81286

Now multiplying the highest exponent prime factors to calculate the LCM of 81278 and 81286.

LCM(81278,81286) = 2¹ × 40639¹ × 97¹ × 419¹
LCM(81278,81286) = 3303381754