Oops - New Prime! (M49 related)

[chalsall]

Originally Posted by NBtarheel_33

IIRC, 0900 US Eastern time (UTC-5), so 1400 UTC. That translates to 0600 in your neck of the woods, Ernst.

Could I please ask that everyone respects the right of George and Scott to be the first announcers, and to not jump the gun on this?

Yes, we're all really excited about this.

But, please, let us all make sure this is a well managed news release.

[Prime95]

Originally Posted by ewmayer

I don't seem to recall a thread about that - could you point me to one, or give a brief summary?

http://www.mersenneforum.org/showpos...4&postcount=57

[ATH]

Originally Posted by Prime95

GIMPS has never been made public a prime that later turned out to be composite. That's what the independent verifications are for!

That is good to hear. I did not mean "made public" as in a press release, but that it leaked out to mathworld and such sites. I'm glad I was mistaken.

[0PolarBearsHere]

Originally Posted by NBtarheel_33

IIRC, 0900 US Eastern time (UTC-5), so 1400 UTC. That translates to 0600 in your neck of the woods, Ernst.

Well I'm not staying up to 1am. I guess I'll have some morning reading on Wednesday.

[aketilander]

Any comments on this exp. Is it a false positive?

http://www.mersenne.org/report_expon...9060367&full=1

Ah, now I see there has already been some comments on that one!

[R. Gerbicz]

Originally Posted by pepi37

If I understand correctly prime has been found, and it is verified. If so, why hurry? Day or 10 days will not change anything.
Wait with patience :)

Here it is a counterexample:
http://arxiv.org/abs/1408.4505
http://arxiv.org/abs/1408.5110v1
the difference between the submissions is only one day. (it was a 10000$ problem from Erdos.)

[rajula]

Originally Posted by R. Gerbicz

Here it is a counterexample:
http://arxiv.org/abs/1408.4505
http://arxiv.org/abs/1408.5110v1
the difference between the submissions is only one day. (it was a 10000$ problem from Erdos.)

Only a counterexample in the (quite insignificant) money-awarding sense. They were both received as original solutions and both were accepted for publication in Annals.

[Madpoo]

Originally Posted by ATH

Yes, it was 16811549 as I wrote. I was only said to be +/- 100k of 2^24=16777216 in that false M40 thread, but it was revealed later in the M41 thread in post #166: http://www.mersenneforum.org/showthr...t=2475&page=10

Doh! I totally missed that you had the exponent itself next to the link to that thread. Tunnel vision...

[lavalamp]

I hope someone has informed Xyzzy so that he can have http://www.mersenneforum.org/png/counter15.png ready to go live tomorrow.

[ATH]

More nostalgia while we wait. Here people in 2002/2003 are talking big about how fast their computers are now on the 16M-20M exponents compared to GIMPS beginning in 1996-1998:
http://www.mersenneforum.org/showthread.php?t=188
http://www.mersenneforum.org/showthread.php?t=1556

I wish we could go back and tell them, that now we can double check a new 7xM prime in 33-36 hours on a Xeon, or ~56 hours on a graphics card!!! and we can factor a ~50M exponent to 72 bits in like 40 mins on a graphics card as well!

Here is a major milestone, all exponents under 79.3M trial factored to 57 bit!!!: http://www.mersenneforum.org/showthread.php?t=336



Now think that people in 10-15 years might be reading this post (right now ;) ) and laughing at me bragging about these speeds. Now they can test a 150M exponent in 12 hours on their phones!!

[Prime95]

While you are waiting, as a reward to GIMPS' most dedicated users, a hint:

The second digit is a 4