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Old 2021-03-02, 01:50   #331
Batalov
 
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Old 2021-03-02, 04:19   #332
Gary
 
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Quote:
Originally Posted by ET_ View Post
March 1st, 2021
New Fermat factor from Luigi Morelli!
74327396788321657 . 242+1 is a Factor of F40!!!
Miracles happen from time to time... and I discovered the second Fermat factor of this year, my very first on my birthday's week!
I started searching with Leonid Durman in the late 1990.
The factor has 30 digits, and was found using a Intel 9800x with a Nvidia RTX2060 and the program mmff from George Woltman.
Congratulations to FermatSearch, we now have 357 Fermat factors known!
-
Congratulations Luigi! And a Happy Birthday (best Birthday present ever!)

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Old 2021-03-02, 06:49   #333
LaurV
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Congrats and Happy birthday. You just missed your BD present, I think now you need to learn your own address better!

(trivia: for who doesn't know, we sent Luigi a parcel to Italy, which is now on the way back to us in Thailand, because he gave us a wrong address and Italian post could not find him . He had a whole adventure trying to get that parcel from the office, but at the end, it was futile, they could not figure out where the parcel is, and blamed the couriers. Morons!)

On the other hand, you just hit Serge so hard with your discovery, he's malding with envy, in spite of lifting that finger, look at his face!

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edit: downside of having multiple, random avatars, haha

Last fiddled with by LaurV on 2021-03-02 at 06:55
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Old 2021-03-05, 12:19   #334
ET_
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"Luigi"
Aug 2002
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Thumbs up And again!

March 4th, 2011 2021
New Fermat factor from Gostin and FermatSearch!
14698299 . 225602+1 is a Factor of F25599!!!
Gary Gostin discovered the third Fermat factor of this year!
This was discovered on an AMD EPYC 7702P based server running pmfs which incorporates George Woltman's gwnum library.
Congratulations to Gary from FermatSearch, for his 85th factor, we now have 358 Fermat factors known!

Last fiddled with by Dr Sardonicus on 2021-03-05 at 13:59 Reason: xinfig posty
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Old 2021-03-17, 20:43   #335
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Congratulations, Luigi, this was a well-deserved discovery and the fourth smallest Fermat number with unknown character. I remember that you were also searching on F31 when you were scooped on that one, but you were such a good sport, remarking that it was great for the Fermat factor community that it was discovered.
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Old 2021-03-18, 11:41   #336
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Quote:
Originally Posted by philmoore View Post
Congratulations, Luigi, this was a well-deserved discovery and the fourth smallest Fermat number with unknown character. I remember that you were also searching on F31 when you were scooped on that one, but you were such a good sport, remarking that it was great for the Fermat factor community that it was discovered.
Thank you Phil
It was so long ago, and still so clear in your mind!
Now I can say I did the right thing. Fermat rules!
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Old 2021-08-12, 11:19   #337
ET_
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Aug 12th, 2021
New Fermat factor from Erwin Doescher and FermatSearch!
749893 . 266648+1 is a Factor of F66643!!!
Erwin Doescher discovered the fourth Fermat factor of this year!
This factor was discovered running LLR and PFGW which incorporates George Woltman's gwnum library.
Congratulations to Erwin from FermatSearch, for his first factor, we now have 359 Fermat factors known!

Last fiddled with by ET_ on 2021-08-12 at 11:19 Reason: closing tags
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Old 2021-08-12, 13:29   #338
Gary
 
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Quote:
Originally Posted by ET_ View Post
Aug 12th, 2021
New Fermat factor from Erwin Doescher and FermatSearch!
749893 . 266648+1 is a Factor of F66643!!!
Erwin Doescher discovered the fourth Fermat factor of this year!
This factor was discovered running LLR and PFGW which incorporates George Woltman's gwnum library.
Congratulations to Erwin from FermatSearch, for his first factor, we now have 359 Fermat factors known!
Congratulations Erwin!!!
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Old 2021-08-12, 13:38   #339
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Quote:
Originally Posted by ET_ View Post
Aug 12th, 2021
New Fermat factor from Erwin Doescher and FermatSearch!
749893 . 266648+1 is a Factor of F66643!!!
Erwin Doescher discovered the fourth Fermat factor of this year!
This factor was discovered running LLR and PFGW which incorporates George Woltman's gwnum library.
Congratulations to Erwin from FermatSearch, for his first factor, we now have 359 Fermat factors known!
What program was used to sieve the range before testing?
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Old 2021-08-12, 20:44   #340
ET_
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Quote:
Originally Posted by rogue View Post
What program was used to sieve the range before testing?
Erwin wrote a GPU based sieve of his own. We are waiting to know more about it
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