In addition, there seem to be some errors in some of the existing sequences. For example, [URL="http://factordb.com/sequences.php?se=1&eff=2&aq=390992&action=last20&fr=0&to=100"]390992.744[/URL] shows up as:

[URL="http://factordb.com/index.php?id=2"][COLOR=#000000]2^3[/COLOR][/URL] · [URL="http://factordb.com/index.php?id=7"][COLOR=#000000]7[/COLOR][/URL] · [URL="http://factordb.com/index.php?id=1100000000296072720"][COLOR=#002099]1805225369...[/COLOR][/URL]<98>

Where the 98-digit cofactor is actually composite. The following terms of the sequence are still correct, but the factorizations are not.

Another power outage?

We should start a fund raiser and donate a decent UPS system to Syd..

The first numbers of Smallest probable primes are wrong with certificates:
2^1156-293<348> 2^1156-399<348> 2^1158-681<349> 2^1410-41<425> 2^1416-203<427> 2^1416-587<427> 2^1416-117<427> 2288091351...<445> 2^1668-453<503> 2^1668-23<503> 2^1820-663<548>

Maybe the sequence cache is not up to date anymore .. I'll delete it and let it rebuild. Hope that will fix it.

@mataje

whats wrong with these PRP's?

Hi Syd: The 445 digits is proven by certificate (Ignacio Santos) and for the others I have send certificates.

[QUOTE=Syd;254650]Maybe the sequence cache is not up to date anymore .. I'll delete it and let it rebuild. Hope that will fix it.[/QUOTE]That may have done it. I checked 282810 and the status looks OK. I'll download one of the problem sequences and check the integrity.

Fantastic work on the DB!

[QUOTE=schickel;254695]That may have done it. I checked 282810 and the status looks OK. I'll download one of the problem sequences and check the integrity.

Fantastic work on the DB![/QUOTE]

Yep, everything looks clean now. In addition, the error I reported in [URL="http://www.mersenneforum.org/showthread.php?p=238511#post238511"]this post[/URL] is also fixed (maybe a while ago).

Syd, let me add my thanks to the many others already posted here for all your work on creating and maintaining the DB. It's a fantastic resource and I've really enjoyed getting involved in the sequences -- it wouldn't be nearly as fun or interesting without your central repository for results.

Tha FactorDB seems to have problems with the HomePrime base 10 sequence:

For example for n=363 the FactorDB ends in a prime although the correct value is open ended (compare with mersennewiki for single indices).

I've informed Syd.
I've not yet checked other bases (2 or 6 on my page) with the FactorDB.
Furthermore it's not clear if other types of sequences affected, too (aliquot, etc.).

Thanks Mathew Steine for the hint.

Thanks you schickel and bchaffin and everyone else for helping!

I think I found & fixed the HP-bug. Sometimes small factors were not sorted correctly, causing a wrong next index. But we'll see ..

[QUOTE=Syd;255639]I think I found & fixed the HP-bug. Sometimes small factors were not sorted correctly, causing a wrong next index. But we'll see ..[/QUOTE]

The erroneous HP10-cases I found are correct now!

Thanks Markus.

What's this?