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What is the Least Common Multiple of 21336 and 21352?

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 21336 and 21352 is 56945784.

LCM(21336,21352) = 56945784

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Least Common Multiple of 21336 and 21352 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 21336 and 21352, than apply into the LCM equation.

GCF(21336,21352) = 8
LCM(21336,21352) = ( 21336 × 21352) / 8
LCM(21336,21352) = 455566272 / 8
LCM(21336,21352) = 56945784

Least Common Multiple (LCM) of 21336 and 21352 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 21336 and 21352. First we will calculate the prime factors of 21336 and 21352.

Prime Factorization of 21336

Prime factors of 21336 are 2, 3, 7, 127. Prime factorization of 21336 in exponential form is:

21336 = 23 × 31 × 71 × 1271

Prime Factorization of 21352

Prime factors of 21352 are 2, 17, 157. Prime factorization of 21352 in exponential form is:

21352 = 23 × 171 × 1571

Now multiplying the highest exponent prime factors to calculate the LCM of 21336 and 21352.

LCM(21336,21352) = 23 × 31 × 71 × 1271 × 171 × 1571
LCM(21336,21352) = 56945784