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What is the Least Common Multiple of 28128 and 28135?

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 28128 and 28135 is 791381280.

LCM(28128,28135) = 791381280

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Least Common Multiple of 28128 and 28135 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 28128 and 28135, than apply into the LCM equation.

GCF(28128,28135) = 1
LCM(28128,28135) = ( 28128 × 28135) / 1
LCM(28128,28135) = 791381280 / 1
LCM(28128,28135) = 791381280

Least Common Multiple (LCM) of 28128 and 28135 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 28128 and 28135. First we will calculate the prime factors of 28128 and 28135.

Prime Factorization of 28128

Prime factors of 28128 are 2, 3, 293. Prime factorization of 28128 in exponential form is:

28128 = 25 × 31 × 2931

Prime Factorization of 28135

Prime factors of 28135 are 5, 17, 331. Prime factorization of 28135 in exponential form is:

28135 = 51 × 171 × 3311

Now multiplying the highest exponent prime factors to calculate the LCM of 28128 and 28135.

LCM(28128,28135) = 25 × 31 × 2931 × 51 × 171 × 3311
LCM(28128,28135) = 791381280