What is the Least Common Multiple of 12409 and 12421?

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 12409 and 12421 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 12409 and 12421, than apply into the LCM equation.

GCF(12409,12421) = 1
LCM(12409,12421) = ( 12409 × 12421) / 1
LCM(12409,12421) = 154132189 / 1
LCM(12409,12421) = 154132189

Least Common Multiple (LCM) of 12409 and 12421 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 12409 and 12421. First we will calculate the prime factors of 12409 and 12421.

Prime Factorization of 12409

Prime Factorization of 12421

Now multiplying the highest exponent prime factors to calculate the LCM of 12409 and 12421.

LCM(12409,12421) = 12409¹ × 12421¹
LCM(12409,12421) = 154132189