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9 February, 00:24

Does reversing the order of digits of a 2 digit prime number always result in a prime number

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Answers (2)
  1. 9 February, 03:21
    0
    No

    for example:

    29 if you switch the digits it becomes 92 and 92 is composite because 2x46=92
  2. 9 February, 03:36
    0
    No, for example, if you had the prime number 23, and you switched the numbers around, it is 32. 32 is not a prime number.
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