[QUOTE=Batalov;379096]In the obvious places!

[url]http://primes.utm.edu/primes/status.php[/url]
[url]http://primes.utm.edu/primes/page.php?id=118254[/url]
and
[url]http://www.primegrid.com/forum_thread.php?id=5824[/url][/QUOTE]

Is Raymond Ottusch the name of the discoverer? I noticed a referece to Scott on the PrimeGrid forum...

Luigi

[url]http://primes.utm.edu/bios/page.php?id=3843[/url]

[QUOTE=Batalov;379216][url]http://primes.utm.edu/bios/page.php?id=3843[/url][/QUOTE]

I just did not know who Raymond Ottusch is: a coordintor of the project (in this case, Scott was the discoverer) oor vice versa.

Now I can easily guess it :smile:

Thanks Serge, as always.

Luigi

He is probably an ordinary user.

With the enormous time cost for finding a Fermat factor among systematically processed Proth primes, the discoverers of the large n-small k Fermat factors are expected to be essentially random (with some bias towards larger users like Randy Ready*, Mark Molder, Scott Brown and others).

____
*who seems to have left his marathon of primes sometime in December

[QUOTE=ET_;379214]...I noticed a reference to Scott on the PrimeGrid forum...

Luigi[/QUOTE]
I see.

This is just their version of the "Luigi has to go on vacation more often", or "George has to go on vacation more often". As the superstition goes, all Mersenne primes are found when "George goes on vacation", right? :rolleyes:

[QUOTE=Batalov;379227]As the superstition goes, all Mersenne primes are found when "George goes on vacation", right? :rolleyes:[/QUOTE]

I'm on vacation all the time. Feel free to find a new Mersenne prime anytime :)

Yay! This rule can never be wrong then.

I just received this message from Payam Samidoost:

"79425*2^100520+1 is a Factor of F100518!!!! Oct 22, 2014
Sieved by Fougeron's FermFact, found as a prime using Penné's LLR and revealed as a Fermat factor by Fougeron's PFGW.
I was expecting some new xGF divisors first, but luckily the very first was a Fermat divisor!
I am checking all 5 digit k's for 100000<n<=100999. I have already verified Batalov's 10000<k<40000. I will continue with 101000<n<=101999 then 102000<n<=102999 and so on."

That [I]was[/I] lucky! Congratulations!

FermatSearch
 

I will be on vacation from Nov. 25th to Dec. 13th, please feel free to find new Fermat factors while I'm out :smile:

And if you have some range at its end, or need some more, I'll be here until Monday night.

Luigi

Takahiro Nohara found a new Fermat factor!
 

I received this messaage yesterday from Takahiro Nohara:

On Sat, 20 Dec 2014 19:42:07 +0900

Hello all,

Today, I found a new prime factor of Fermat number.

44670651*2^9749+1 is a Factor of F9747 !!!!
This is my eleventh factor.