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143 (another Prime Pages' Curiosity) |
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The last 143 digits of 143143 form a prime number. [De Geest] The smallest number which is bi-prime brilliant in all radices from 2 to 10. [Hartley] The number of three-digit primes. [Patterson] 100^143 - 143 is prime. Note that 143 is the second number with this property. [Firoozbakht] The smallest tnaillirb, i.e., a brilliant number whose reversal is a different brilliant number. This is a special subset of emirpimes, with only 102 examples below 100000. [Post]
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