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| Prime, but not forever (Posted on 2010-08-12) |
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Cosider the following sequence :
a(0) = p, where p is a prime
a(i+1) =2*a(i)+1) : e.g. 5, 11, 23, 47,...
Prove that there is no value of p creating a sequence of prime numbers only.
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Submitted by Ady TZIDON
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Rating: 3.0000 (1 votes)
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Subject |
Author |
Date |
 | proof | Daniel | 2010-08-12 13:42:36 |
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