Calculate the Least Common Multiple or LCM of 99 and 678
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The instructions to find the LCM of 99 and 678 are the next:
1. Decompose all numbers into prime factors
| 99 | 3 |
| 33 | 3 |
| 11 | 11 |
| 1 |
| 678 | 2 |
| 339 | 3 |
| 113 | 113 |
| 1 |
2. Write all numbers as the product of its prime factors
| Prime factors of 99 | = | 32 . 11 |
| Prime factors of 678 | = | 2 . 3 . 113 |
3. Choose the common and uncommon prime factors with the greatest exponent
Common prime factors: 3
Common prime factors with the greatest exponent: 32
Uncommon prime factors: 11 , 2 , 113
Uncommon prime factors with the greatest exponent: 111, 21, 1131
4. Calculate the Least Common Multiple or LCM
Remember, to find the LCM of several numbers you must multiply the common and uncommon prime factors with the greatest exponent of those numbers.
LCM = 32. 111. 21. 1131 = 22374
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