Comments on: FT. Sum and Double, Double and Sum http://mathfactor.uark.edu/2009/05/ft-sum-and-double-double-and-sum/ The Math Factor Podcast Site Fri, 08 Aug 2014 12:52:06 +0000 hourly 1 https://wordpress.org/?v=4.9.25 By: strauss http://mathfactor.uark.edu/2009/05/ft-sum-and-double-double-and-sum/comment-page-1/#comment-516 Tue, 26 May 2009 00:42:35 +0000 http://mathfactor.uark.edu/?p=594#comment-516 Fixed! Hope I got to it before Google!

]]> By: Brian Tristam Williams http://mathfactor.uark.edu/2009/05/ft-sum-and-double-double-and-sum/comment-page-1/#comment-515 Sun, 24 May 2009 02:10:11 +0000 http://mathfactor.uark.edu/?p=594#comment-515 Heh, you forgot to mess with the digits a little further up :-)

]]> By: Brian Tristam Williams http://mathfactor.uark.edu/2009/05/ft-sum-and-double-double-and-sum/comment-page-1/#comment-514 Sat, 23 May 2009 11:59:18 +0000 http://mathfactor.uark.edu/?p=594#comment-514 I was going through powers of 2 after your last podcast. I couldn’t find any that had this property, and I went up pretty high.

However, I did spot an interesting pattern that yielded just one Google search result, which was the subject of an earlier podcast of yours. Sweet!

If you go through all the powers of 2, you will find that the very last digit ends in the following sequence 1 2486 2486 2486 …

Now for the second digit (the tens) – it ends in the following sequence: [One]362512499863748750[Zero] [One]362512499863748750[Zero] …

Now, doing a Google search for [One]362512499863748750[Zero] yields exactly one result. Nice! A Google of  “[One] 3 6 2 5 1 2 4 9 9 8 6 3 7 4 8 7 5 0 [Zero]” also yields another, different single result.

Of course, by posting this here, that property is likely to change, but it was fun while it lasted :-)

[[Edit by strauss: can’t spoil the fun! So messed with the digits to keep it out of google!]]

—
~podcast listener in Johannesburg, South Africa

]]>