What is the Least Common Multiple of 12643 and 12649?

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 12643 and 12649 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 12643 and 12649, than apply into the LCM equation.

GCF(12643,12649) = 1
LCM(12643,12649) = ( 12643 × 12649) / 1
LCM(12643,12649) = 159921307 / 1
LCM(12643,12649) = 159921307

Least Common Multiple (LCM) of 12643 and 12649 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 12643 and 12649. First we will calculate the prime factors of 12643 and 12649.

Prime Factorization of 12643

Prime Factorization of 12649

Now multiplying the highest exponent prime factors to calculate the LCM of 12643 and 12649.

LCM(12643,12649) = 47¹ × 269¹ × 7¹ × 13¹ × 139¹
LCM(12643,12649) = 159921307