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A094476
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Primes of form 2^j + 17^j.
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2
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OFFSET
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1,1
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COMMENTS
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The number j must be zero or a power of 2. Checked j being powers of two through 2^20. Thus a(5) > 10^2500000. Primes of this magnitude are rare (about 1 in 5.9 million), so chance of finding one is remote with today's computer algorithms and speeds. - Robert Price, Apr 29 2013
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LINKS
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EXAMPLE
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j=0: p=1+1=2;j=1: p=2+17=19;j=2: p=4+289=293;j=4: p=16+83521=83537; the j exponents are powers of 2.
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MATHEMATICA
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Select[Table[2^n+17^n, {n, 0, 2000}], PrimeQ] (* Harvey P. Dale, Nov 27 2012 *)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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