20071128, 22:41  #1 
Oct 2006
260_{10} Posts 
HomePrime spreadsheets
Hello,
Does anyone have excel or similar spreadsheets with HomePrime sequences? I'm specifically interested in sequences with more than 50 iterations. Thanks! roger 
20071128, 22:48  #2 
Jul 2003
So Cal
3773_{8} Posts 
They are available in text format at http://www.mersennewiki.org/index.ph..._Primes_Search. These would be easy to import into a spreadsheet. I have been using spare cycles to extend a few of these over the past week and I have base10 results for 320, 714, and 973 that I haven't posted yet, but no new home primes.
Greg 
20071128, 23:04  #3 
Oct 2006
2^{2}×5×13 Posts 
Thanks,
I'm trying to create a graph that shows where the majority of factors land, the average factor size, and the number of factors in each iteration. If I do this across several HP's, some kind of correlation should show up. I know this won't help determine what the factor is for any untested HP, but I'm interested in the upper and lower bounds/limits. From my experience in my two HP's (that have not been reserved etc), there are definite bounds on both sides. I wonder if this is repeated across HP's. roger 
20071128, 23:40  #4 
Jul 2003
So Cal
3^{2}·227 Posts 
Do you have results that aren't posted on the site? I don't want to repeat work that you've done.
Greg 
20071128, 23:45  #5 
Oct 2006
2^{2}·5·13 Posts 
I do have results not posted on internet sites, but only because they are pretty much random ones of 18 and 29 digits. So I'm pretty positive no one has done any work on them, and neither I nor anyone else will be repeating someone elses work anytime soon!
I haven't done any work on smaller numbers to any considerable degree. roger Last fiddled with by roger on 20071128 at 23:46 
20071129, 00:43  #6 
Aug 2004
New Zealand
3×73 Posts 
Actually at one point I was tempted to see how many numbers are currently known to have the same home prime as 49 (note this could be way more than the current number of iterations, because if you take any value in the sequence you can try chopping it up into increasing primes).

20071129, 00:58  #7  
"Mark"
Apr 2003
Between here and the
2·5^{2}·7·17 Posts 
Quote:
Last fiddled with by rogue on 20071129 at 00:58 

20071129, 03:57  #8 
Oct 2006
2^{2}×5×13 Posts 
Also, Shiva sent me a program to try related to the HomePrimes. It basically does the HomePrime search for you (factoring and combining etc), and could also look at possible previous iterations. For example, if you had the number 23337, it would give 2*3*3*3*7 = 378; 2*3*3*37 = 666; 2*3*337 = 2022; 23*337 = 7751 as possible immediately previous iterations.
I don't know if it is ready for distribution, but it's interesting. Thanks for the links! roger 
20071129, 13:23  #9 
"Mark"
Apr 2003
Between here and the
2·5^{2}·7·17 Posts 
I was looking at the mersennewiki site on Home Primes and must say that it is difficult to read.
I am willing to take over the maintenance of Sander's Home Prime pages, which are much more readable, on my ISP. Does anyone have any objections? If not, I would like hear if anyone has any suggestions on it. For example, Shiva's program sounds interesting and could be very useful in the verifications of identified Home Primes. 
20071129, 15:51  #10 
"Mike"
Aug 2002
5·23·67 Posts 
Maybe we can format the wiki pages to be more readable?

20071129, 16:33  #11  
Jan 2007
Canada
2^{4} Posts 
Quote:
Anyway, I do have a routine that will verify the current Home Prime results pages (just the results pages, though) and I run that whenever they are updated. The wiki pages are very easy for a computer to read :) 
