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What is the Least Common Multiple of 90315 and 90320?

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 90315 and 90320 is 1631450160.

LCM(90315,90320) = 1631450160

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Least Common Multiple of 90315 and 90320 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 90315 and 90320, than apply into the LCM equation.

GCF(90315,90320) = 5
LCM(90315,90320) = ( 90315 × 90320) / 5
LCM(90315,90320) = 8157250800 / 5
LCM(90315,90320) = 1631450160

Least Common Multiple (LCM) of 90315 and 90320 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 90315 and 90320. First we will calculate the prime factors of 90315 and 90320.

Prime Factorization of 90315

Prime factors of 90315 are 3, 5, 223. Prime factorization of 90315 in exponential form is:

90315 = 34 × 51 × 2231

Prime Factorization of 90320

Prime factors of 90320 are 2, 5, 1129. Prime factorization of 90320 in exponential form is:

90320 = 24 × 51 × 11291

Now multiplying the highest exponent prime factors to calculate the LCM of 90315 and 90320.

LCM(90315,90320) = 34 × 51 × 2231 × 24 × 11291
LCM(90315,90320) = 1631450160