The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A091710 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A091710

Number of primes less than 10^n having at least one digit 9.
(history; published version)

#14 by Giovanni Resta at Tue Jul 21 06:47:18 EDT 2015

STATUS

editing

approved

#13 by Giovanni Resta at Tue Jul 21 06:47:09 EDT 2015

DATA

0, 6, 60, 542, 4826, 43359, 397093, 3677641, 34316162, 321993007, 3035059323, 28710966351, 272413818120, 2591276923548

CROSSREFS

Cf. A091744, A091745, A091746, A091747, A046029, A091644, A091645, A091646, A091647, A090705, A090706, A091707, A091708, A091709.

EXTENSIONS

a(14) from Giovanni Resta, Jul 21 2015

STATUS

approved

editing

#12 by Jon E. Schoenfield at Sat Mar 28 22:43:13 EDT 2015

STATUS

editing

approved

#11 by Jon E. Schoenfield at Sat Mar 28 22:43:11 EDT 2015

MATHEMATICA

NextPrim[n_] := Block[{k = n + 1}, While[ !PrimeQ[k], k++ ]; k]; c = 0; p = 1; Do[ While[ p = NextPrim[p]; p < 10^n, If[ Position[ IntegerDigits[p], 9] != {}, c++ ]]; Print[c]; p--, {n, 1, 8}] (from * _Robert G. Wilson v _, Feb 02 2004 *)

STATUS

approved

editing

#10 by T. D. Noe at Mon Nov 11 19:59:32 EST 2013

STATUS

proposed

approved

#9 by Robert Price at Mon Nov 11 19:49:31 EST 2013

STATUS

editing

proposed

#8 by Robert Price at Mon Nov 11 19:47:16 EST 2013

DATA

0, 6, 60, 542, 4826, 43359, 397093, 3677641, 34316162, 321993007, 3035059323, 28710966351, 272413818120

EXTENSIONS

a(13) from Robert Price, Nov 11 2013

STATUS

approved

editing

#7 by Charles R Greathouse IV at Wed Oct 02 15:12:37 EDT 2013

EXTENSIONS

3 more terms from _Ryan Propper (rpropper(AT)stanford.edu), _, Aug 22 2005

Discussion

Wed Oct 02

15:12

OEIS Server: https://oeis.org/edit/global/1961

#6 by Russ Cox at Sat Mar 31 10:32:39 EDT 2012

AUTHOR

_Enoch Haga (Enokh(AT)comcast.net), _, Jan 30 2004

Discussion

Sat Mar 31

10:32

OEIS Server: https://oeis.org/edit/global/789

#5 by Russ Cox at Fri Mar 30 17:30:59 EDT 2012

EXTENSIONS

Edited and extended by _Robert G. Wilson v (rgwv(AT)rgwv.com), _, Feb 02 2004

Discussion

Fri Mar 30

17:30

OEIS Server: https://oeis.org/edit/global/156