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What is the Least Common Multiple of 21792 and 21797?

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 21792 and 21797 is 475000224.

LCM(21792,21797) = 475000224

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Least Common Multiple of 21792 and 21797 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 21792 and 21797, than apply into the LCM equation.

GCF(21792,21797) = 1
LCM(21792,21797) = ( 21792 × 21797) / 1
LCM(21792,21797) = 475000224 / 1
LCM(21792,21797) = 475000224

Least Common Multiple (LCM) of 21792 and 21797 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 21792 and 21797. First we will calculate the prime factors of 21792 and 21797.

Prime Factorization of 21792

Prime factors of 21792 are 2, 3, 227. Prime factorization of 21792 in exponential form is:

21792 = 25 × 31 × 2271

Prime Factorization of 21797

Prime factors of 21797 are 71, 307. Prime factorization of 21797 in exponential form is:

21797 = 711 × 3071

Now multiplying the highest exponent prime factors to calculate the LCM of 21792 and 21797.

LCM(21792,21797) = 25 × 31 × 2271 × 711 × 3071
LCM(21792,21797) = 475000224