Calculate the Least Common Multiple or LCM of 290 and 3156
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The instructions to find the LCM of 290 and 3156 are the next:
1. Decompose all numbers into prime factors
| 290 | 2 |
| 145 | 5 |
| 29 | 29 |
| 1 |
| 3156 | 2 |
| 1578 | 2 |
| 789 | 3 |
| 263 | 263 |
| 1 |
2. Write all numbers as the product of its prime factors
| Prime factors of 290 | = | 2 . 5 . 29 |
| Prime factors of 3156 | = | 22 . 3 . 263 |
3. Choose the common and uncommon prime factors with the greatest exponent
Common prime factors: 2
Common prime factors with the greatest exponent: 22
Uncommon prime factors: 5 , 29 , 3 , 263
Uncommon prime factors with the greatest exponent: 51, 291, 31, 2631
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 = 22. 51. 291. 31. 2631 = 457620
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