[QUOTE=Dubslow;302198]I'll take 71117_224 (though I have no idea what the actual form of the number is, for purposes of reporting it to the FDB).

Edit: Thanks :smile:
What does "71117_224" have to do with (64·10[sup]224[/sup]+53)/9 ? (The 224 is close to the difficulty...)
Edit2: Nevermind, got that question too :smile:[/QUOTE]

Done, after a [URL="http://www.mersenneforum.org/showthread.php?p=302498#post302498"]farce[/URL] with me figuring out about the heretofore unknown-to-me -ncr option too late, causing me to lose three days of work. :razz:
[code]PRP115 = 1338382976571413230165608293458944642172164297784485136634643668600259889557905086686641021522741867230099192114699
PRP107 = 99666309668989396665600950146576917166454241065739191163823331200578020384662329552118417643363797052567293[/code]
Now that I know, it won't be anywhere near as long in the future :razz:

PS How many repdigit numbers are(n't) in the FDB?

I would like to reserve 23333_226.

I'll do 2389_67_minus1

[QUOTE=RichD;302920]I would like to reserve 23333_226.[/QUOTE]

Splits as:

[CODE]prp85 = 4146602141027439755587161181531045747452512307779298937998796215046778215687275302251
prp140 = 13366026623972387846979539255761804453690887421694251528050915058435195922151838759172865930811995926714679220159595644563147897085591323923[/CODE]

[QUOTE=Mathew;302832]I would like to reserve 59999_217[/QUOTE]

Complete

[CODE]prp98 factor: 11304061104983935987790740185102037368860179019921467124564350834048506432073395536295502413646921
prp115 factor: 8853564366910146054111965956641927405840817926036297662985845982271364889370463684379291107465197654910509371978463[/CODE]

Will do 22223_229
__________________

2389_67_minus1 = p74 . p104 (in FactorDB)

I would like to reserve 33331_227.

Will do 22223_228, too

[QUOTE=RichD;303454]I would like to reserve 33331_227.[/QUOTE]

Splits as:

[CODE]prp79 = 2766072618248995915512967892212660490884209669746962080975694836870228687891487
prp139 = 1713422326038902397807719807569941985254347185409757953834495098945874348921240251563756319814566840302191142689114270926046653350875882897
[/CODE]

22223_229 is done
c227 = p64 * p164 (in FactorDB)

I would like to reserve 11311_110.