mersenneforum.org  

Go Back   mersenneforum.org > Fun Stuff > Lounge

Reply
 
Thread Tools
Old 2012-02-21, 10:44   #1
ET_
Banned
 
ET_'s Avatar
 
"Luigi"
Aug 2002
Team Italia

112178 Posts
Default Happy Palindromic day!

For us Europeans, today is 21-02-2012

Luigi
ET_ is offline   Reply With Quote
Old 2012-02-21, 18:00   #2
oswald
 
oswald's Avatar
 
Apr 2011
in vivo

3×52 Posts
Default

2, 3, 5, 7, 11, 101, 131, 151, 181, 191, 313, 353, 373, 383, 727, 757, 787, 797, 919, 929, 10301, 10501, 10601, 11311, 11411, 12421, 12721, 12821, 13331, 13831, 13931, 14341, 14741, 15451, 15551, 16061, 16361, 16561, 16661, 17471, 17971, 18181, 18481, 19391, 19891 and 19991.
oswald is offline   Reply With Quote
Old 2012-02-21, 18:04   #3
oswald
 
oswald's Avatar
 
Apr 2011
in vivo

7510 Posts
Default

2
30203
133020331
1713302033171
12171330203317121
151217133020331712151
1815121713302033171215181
16181512171330203317121518161
331618151217133020331712151816133
9333161815121713302033171215181613339
11933316181512171330203317121518161333911



I imagine both of these have been all ready been posted somewhere.
oswald is offline   Reply With Quote
Old 2012-02-21, 18:13   #4
xilman
Bamboozled!
 
xilman's Avatar
 
May 2003
Down not across

268316 Posts
Default

Quote:
Originally Posted by oswald View Post
2
30203
133020331
1713302033171
12171330203317121
151217133020331712151
1815121713302033171215181
16181512171330203317121518161
331618151217133020331712151816133
9333161815121713302033171215181613339
11933316181512171330203317121518161333911



I imagine both of these have been all ready been posted somewhere.
┬┐Que?
xilman is offline   Reply With Quote
Old 2012-02-21, 18:20   #5
fivemack
(loop (#_fork))
 
fivemack's Avatar
 
Feb 2006
Cambridge, England

23×13×61 Posts
Default

I'm guessing it's the largest tree of palindromic primes growing in that two-digits-at-a-side way
fivemack is offline   Reply With Quote
Reply

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
happy Pi Day! adpowers Lounge 161 2020-03-14 22:20
Binary Palindromic Primes CannOfPrimes No Prime Left Behind 6 2013-09-19 01:49
Happy 2*2*503! 10metreh Lounge 5 2012-01-04 11:29
happy Pi Day! ixfd64 Lounge 30 2008-03-15 19:28
Palindromic Primes S80780 Math 5 2003-04-13 23:49

All times are UTC. The time now is 13:36.

Fri Apr 10 13:36:15 UTC 2020 up 16 days, 11:09, 0 users, load averages: 2.27, 2.40, 2.52

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.

This forum has received and complied with 0 (zero) government requests for information.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.
A copy of the license is included in the FAQ.