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A068847
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Smallest prime with same leading digits as 7^n.
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2
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11, 71, 491, 3433, 24019, 168071, 11764967, 8235431, 576480103, 403536071, 2824752493, 19773267431, 1384128720101, 9688901040727, 6782230728491, 474756150994337, 3323293056960127, 23263051398720713, 162841359791044903
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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EXAMPLE
| a(3)=3433 because this is the smallest prime starting with 7^3=343.
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MAPLE
| for i from 0 to 30 do a := nextprime(7^i*10); b := 1; while(a-7^i*10^b>=10^b) do b := b+1; a := nextprime(7^i*10^b); end do; c[i] := a; end do:q := seq(c[i], i=0..30);
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CROSSREFS
| Cf. A068846.
Sequence in context: A164559 A123362 A199488 * A139185 A103998 A160587
Adjacent sequences: A068844 A068845 A068846 * A068848 A068849 A068850
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KEYWORD
| nonn,base
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AUTHOR
| Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Mar 10 2002
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EXTENSIONS
| More terms from Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), Mar 17 2002
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