The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A228241 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A228241

Log 10-primes: primes in the initial decimal digits of log(10).
(history; published version)

#24 by Harvey P. Dale at Mon Sep 13 11:51:00 EDT 2021

STATUS

editing

approved

#23 by Harvey P. Dale at Mon Sep 13 11:50:56 EDT 2021

COMMENTS

The next term (a(4)) has 242 digits. - Harvey P. Dale, Sep 13 2021

MATHEMATICA

Module[{nn=500, l10}, l10=RealDigits[Log[10], 10, nn][[1]]; Select[ Table[ FromDigits[ Take[l10, n]], {n, nn}], PrimeQ]] (* Harvey P. Dale, Sep 13 2021 *)

STATUS

approved

editing

#22 by N. J. A. Sloane at Fri Feb 23 10:51:12 EST 2018

STATUS

editing

approved

#21 by N. J. A. Sloane at Fri Feb 23 10:51:09 EST 2018

LINKS

Eric W. Weisstein, <a href="/A228241/b228241.txt">Table of n, a(n) for n = 1..75</a>

STATUS

approved

editing

#20 by OEIS Server at Mon Oct 12 09:13:23 EDT 2015

LINKS

Eric W. Weisstein, <a href="/A228241/b228241_1.txt">Table of n, a(n) for n = 1..7</a>

#19 by Joerg Arndt at Mon Oct 12 09:13:23 EDT 2015

STATUS

proposed

approved

Discussion

Mon Oct 12

09:13

OEIS Server: Installed new b-file as b228241.txt.  Old b-file is now b228241_1.txt.

#18 by Eric W. Weisstein at Mon Oct 12 09:02:16 EDT 2015

STATUS

editing

proposed

#17 by Eric W. Weisstein at Mon Oct 12 09:02:12 EDT 2015

LINKS

Eric W. Weisstein, <a href="/A228241/b228241_1.txt">Table of n, a(n) for n = 1..57</a>

#16 by Eric W. Weisstein at Mon Oct 12 08:52:02 EDT 2015

LINKS

Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/ConstantPrimes.html"> Constant Primes</a>

#15 by Eric W. Weisstein at Mon Oct 12 08:51:39 EDT 2015

LINKS

Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/NaturalLogarithmof10Digits.html">Natural Logarithm of 10 Digits</a>

STATUS

approved

editing