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Ponder This

April 2010

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Ponder This Challenge:

This month's challenge is based on a suggestion from Leo Broukhis.

The prime number 4535653, when translated to base 16, gives the hexadecimal number 0x453565, which has the same digits as the original number, omitting the last digit.

Find another example of a prime number that, translated to hexadecimal, yields the same digits, omitting the last 21 digits.

If you like this challenge, you may find April's riddle on UYHIP (link resides outside of ibm.com) interesting as well.


We will post the names of those who submit a correct, original solution! If you don't want your name posted then please include such a statement in your submission!

We invite visitors to our website to submit an elegant solution. Send your submission to the ponder@il.ibm.com.

If you have any problems you think we might enjoy, please send them in. All replies should be sent to: ponder@il.ibm.com

  

Challenge: 03/30/2010 @ 03:00 PM EST
Solution: 05/01/2010 @ 03:00 PM EST
List Updated: 04/30/2010 @ 03:00 PM EST

People who answered correctly:

Puzzlet Chung (03/31/2010 05:07 AM EDT)
Lukasz Bolikowski (03/31/2010 06:36 AM EDT)
Dan Dima
(03/31/2010 03:05 PM EDT)
Joseph DeVincentis (03/31/2010 04:20 PM EDT)
Michael Liepelt (04/01/2010 05:57 PM EDT)
Chuck Carroll (04/01/2010 11:00 PM EDT)
Xuhui Li (04/02/2010 02:05 AM EDT)
Victor A Chang (04/02/2010 04:40 AM EDT)
Christian Blatter (04/02/2010 05:23 AM EDT)
Thomas Jessen (04/02/2010 07:15 AM EDT)
Clive Tong (04/02/2010 11:07 AM EDT)
Andreas Eisele (04/02/2010 11:25 AM EDT)
Michael Quist (04/02/2010 01:30 PM EDT)
Arthur Breitman (04/02/2010 02:23 PM EDT)
Andreas Stiller (04/02/2010 07:06 PM EDT)
Emile Joubert (04/02/2010 09:22 PM EDT)
Harald Bögeholz (04/04/2010 11:59 AM EDT)
Mark Mixer (04/04/2010 04:16 PM EDT)
Daniel Bitin (04/04/2010 04:58 PM EDT)
John T. Robinson (04/04/2010 10:46 PM EDT)
Kang Seonghoon (04/05/2010 02:41 AM EDT)
Kevin Williamson (04/05/2010 07:54 AM EDT)
Adam Daire (04/05/2010 07:05 PM EDT)
Albert Stadler (04/07/2010 10:21 AM EDT)
Joseph Bonneau (04/07/2010 02:51 PM EDT)
Piotr Komisarski (04/07/2010 03:58 PM EDT)
Eugene Vasilchenko (04/08/2010 11:48 AM EDT)
Phil Muhm (04/08/2010 03:24 PM EDT)
Reiner Martin (04/08/2010 07:40 PM EDT)
Jan van Delden (04/09/2010 07:53 AM EDT)
Donald T. Dodson (04/09/2010 01:52 PM EDT)
Chuck Grant (04/11/2010 11:40 PM EDT)
Pataki Gergely (04/13/2010 06:45 PM EDT)
Lachezar Hristov (04/14/2010 05:54 AM EDT)
Sylvain Becker (04/14/2010 06:08 PM EDT)
Nagy Zoltan (04/17/2010 08:03 AM EDT)
Sevag Papazian (04/17/2010 08:42 AM EDT)
Wolfgang Kais (04/19/2010 12:34 PM EDT)
Venkata Ramayya Muramalla (04/19/2010 01:43 PM EDT)
Bojan Basic (04/19/2010 08:13 PM EDT)
Sidharth Lath (04/25/2010 04:01 PM EDT)
Frank Morten (04/25/2010 04:52 PM EDT)
Stephen Herbert (04/27/2010 11:57 PM EDT)
Rani Hod (04/28/2010 06:07 AM EDT)
Yuval Filmus (04/28/2010 09:38 PM EDT)
Mauro Bampo (04/29/2010 06:23 PM EDT)
Don Ryan (04/29/2010 10:52 PM EDT)


Attention: If your name is posted here and you wish it removed please send email to the ponder@il.ibm.com.