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What is the Least Common Multiple of 12215 and 12225?

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 (LCM) of 12215 and 12225 is 29865675.

LCM(12215,12225) = 29865675

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Least Common Multiple of 12215 and 12225 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 12215 and 12225, than apply into the LCM equation.

GCF(12215,12225) = 5
LCM(12215,12225) = ( 12215 × 12225) / 5
LCM(12215,12225) = 149328375 / 5
LCM(12215,12225) = 29865675

Least Common Multiple (LCM) of 12215 and 12225 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 12215 and 12225. First we will calculate the prime factors of 12215 and 12225.

Prime Factorization of 12215

Prime factors of 12215 are 5, 7, 349. Prime factorization of 12215 in exponential form is:

12215 = 51 × 71 × 3491

Prime Factorization of 12225

Prime factors of 12225 are 3, 5, 163. Prime factorization of 12225 in exponential form is:

12225 = 31 × 52 × 1631

Now multiplying the highest exponent prime factors to calculate the LCM of 12215 and 12225.

LCM(12215,12225) = 52 × 71 × 3491 × 31 × 1631
LCM(12215,12225) = 29865675