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Search: id:A076703
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| A076703 |
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Palindromic prime powers of prime numbers. |
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+0
1
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| 4, 8, 9, 121, 343, 1331, 10201, 94249, 1030301, 900075181570009, 10022212521222001, 12124434743442121, 12323244744232321, 12341234943214321
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OFFSET
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1,1
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COMMENT
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Up to 10^14, there are only 9 palindromic prime powers of prime numbers.
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MATHEMATICA
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a = {}; Do[pp = Prime[n]^Prime[i]; d = IntegerDigits[pp]; If[d == Reverse[d], a = Append[a, pp]], {n, 1, PrimePi[ Sqrt[10^21]]}, {i, 1, PrimePi[ Floor[ Log[ Prime[n], 10^21]]]}]; Sort[a]
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CROSSREFS
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Cf. A053810, A075308, subset of A072037.
Sequence in context: A077271 A072037 A084093 this_sequence A108806 A074776 A029886
Adjacent sequences: A076700 A076701 A076702 this_sequence A076704 A076705 A076706
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KEYWORD
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nonn,base
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AUTHOR
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Zak Seidov (zakseidov(AT)yahoo.com), Oct 26 2002
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EXTENSIONS
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Edited and corrected by Robert G. Wilson v (rgwv(AT)rgwv.com), Oct 31 2002
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