The book is now available! 30000000
(another Prime Pages' Curiosity)
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30000000+3000000+300000+30000+3000+300+30 plus one is prime. Eliminate one summand each time (left-to-right) and primes will be obtained all along. [Silva]


  Submitted: 2010-04-11 14:08:25;   Last Modified: 2010-04-11 19:08:28.

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