hatemath3 hatemath3
  • 03-12-2015
  • Mathematics
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Does reversing the order of digits of a 2 digit prime number always result in a prime number

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aryn814
aryn814 aryn814
  • 03-12-2015
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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Аноним Аноним
  • 03-12-2015
no 
for example:
     
                29   if you switch the digits it becomes 92 and 92 is composite because 2x46=92
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