Holy new Mersenne prime, Batman! (M47 related)

[ixfd64]

Check out the server status page!

Factored composite: 811
Lucas-Lehmer composite: 4477
Double-checked LL: 1626
Prime, UNVERIFIED: 1

[jrk]

And right as George is on vacation, until Tuesday.

Anyone know how to figure out which exponent it is?

[retina]

Let the sleuthing work begin.

[Uncwilly]

Kinda puts a dent in this thread: http://www.mersenneforum.org/showthread.php?t=10510
and this one http://www.mersenneforum.org/showthread.php?t=7248

Originally Posted by Prime95

I'll be on vacation until August 26. I'll have only sporadic Internet access while I'm gone.

You have my permission to find a new prime while I'm gone. You do not have my permission to crash the servers.

See it only took him giving permission.

[henryzz]

Originally Posted by Uncwilly

Kinda puts a dent in this thread: http://www.mersenneforum.org/showthread.php?t=10510

not necessarily there are still untested exponents below 10milion digits

brill news!!!!!!!!!!!!!!!!!

[Uncwilly]

Hopefully Scott has the serve set to e-mail/SMS George on his mobile.

[davieddy]

Originally Posted by ixfd64

Check out the server status page!

That is 1900 UTC. Is this the first time the prime is mentioned?

[Graff]

Originally Posted by jrk

And right as George is on vacation, until Tuesday.

Anyone know how to figure out which exponent it is?

Well, downloading the latest cleared.txt file and
comparing it to the stats listed might give a hint.
The cleared.txt I downloaded had 6933 entries in
it. The stats for the corresponding time indicated
812 factored composite, 1628 double checks and
4492 first-time tests. With the unverified prime
that gives 812+1628+4492+1 = 6933. So the
prime is (probably) listed in cleared.txt. But it's
not there with a residue of 0. So, if it's there, it's
there with a fake residue.
Since the first notice here came at 19:24 UT, it is
a reasonable assumption that the result was
submitted after 18:00. Sorting the first-time tests
by time produces these possibilities:

32234869  69     0xB45FE198573472__                23-Aug-08 18:59  raistlin078♦
41125727  75     0xCF6D113C931A1A__                23-Aug-08 18:40  edfox      ♦
32862211  68     0xFD2FB401271F0B__                23-Aug-08 18:37  linded     ♦
43039897  70     0xC406DB93EF918C__                23-Aug-08 18:30  AO         ♦
31714931  69     0xD17567F80D80BE__                23-Aug-08 18:25  ahmerali   ♦
39598231  69     0xC6A9494D6AF911__                23-Aug-08 18:16  dstoops    ♦
17634277  66     0x74561216DE9ADB__                23-Aug-08 18:04  shaneamy   ♦

Of course, the above could be a load of codswollop,
as it makes certain assumptions about the timing
of the unverified prime posting.

Graff

[Mini-Geek]

WOW! The legendary 10M digit prime was probably finally found!

Originally Posted by Graff

Of course, the above could be a load of codswollop,
as it makes certain assumptions about the timing
of the unverified prime posting.

Isn't there an hourly archive of PrimeNet's files somewhere? Where is that?

[retina]

Originally Posted by Mini-Geek

WOW! The legendary 10M digit prime was probably finally found!

Is it really the stuff of legends?

And since 4/7 of the numbers given by Graff are less than 10M I would think it would be better to use the word "possibly" rather than "probably". A minor detail of course, but pedantry is one of my hobbies.

[ixfd64]

Originally Posted by Mini-Geek

WOW! The legendary 10M digit prime was probably finally found!

Isn't there an hourly archive of PrimeNet's files somewhere? Where is that?

The archives are supposed to be at http://www.mersenneforum.org/primenet and http://tuatara.sdsu.edu/primenet, but they both seem to be down at the moment.