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No. 143 has prime factors 11 and 13. 11 * 13 = 143

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15y ago

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No. The digits in the odd-numbered positions (1 and 3) add up to 4, and the digit in the even-numbered position is 4. So it is a multiple of 11. 11 * 13 = 143.

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12y ago
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Q: Is 143 a prime number why?
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