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Search: id:A068848
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| A068848 |
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Smallest prime with same leading digits as 8^n. |
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+0
2
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| 11, 83, 641, 51203, 40961, 327689, 2621447, 20971529, 167772161, 1342177283, 10737418247, 85899345923, 687194767367, 54975581388811, 43980465111043, 3518437208883211, 28147497671065609, 22517998136852483
(list; graph; listen)
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OFFSET
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0,1
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EXAMPLE
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a(3)=51203 because this is the smallest prime starting with 8^3=512.
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MAPLE
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for i from 1 to 40 do a := nextprime(8^i*10); b := 1; while(a-8^i*10^b>=10^b) do b := b+1; a := nextprime(8^i*10^b); end do; c[i] := a; end do:q := seq(c[i], i=1..40);
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CROSSREFS
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Cf. A068846, A068847.
Sequence in context: A030692 A055369 A016282 this_sequence A129077 A012478 A026783
Adjacent sequences: A068845 A068846 A068847 this_sequence A068849 A068850 A068851
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KEYWORD
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nonn,base
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Mar 10 2002
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EXTENSIONS
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More terms from Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de) and Benoit Cloitre (benoit7848c(AT)orange.fr), Mar 17 2002
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