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Old 2006-09-21, 22:28   #1
Kosmaj
 
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Default Other Primes

I thought it would be nice to have a thread discussing primes found by others, or by us but not related to RPS.

And the first one is
2^1203793-2^601897+1 (362378 digits)

new Gaussian Mersenne norm record set by Cruelty. More details can be found here

Congratulations!

The form can be searched using the latest version of LLR (3.7.x). I tried once at 400k but it was a bit time consuming (on my laptop) and I gave up.
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Old 2006-09-21, 23:02   #2
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Earlier this month I found 99*10^139670-1, the new Near-repdigit record. In fact, 10 of the top 20 for this form have been entered in the last
2-3 months.
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Old 2006-10-11, 03:16   #3
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Badges marking the latest 9.8M-digit Mersenne prime are available in this thread. Sign up there if you'd like to have one.
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Old 2006-11-16, 21:57   #4
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(2^1127239+2^563620+1)/5 is 3-PRP!, which AFAIK is the largest GQ so far
The question I have now is, how to prove it is, or it is not a prime
BTW: I don't consider using PRIMO or other ECPP based software for this purpose as it would take more than my life to complete
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Old 2006-11-20, 01:55   #5
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Replies to the above post moved to a separate thread:

GQ(1127239) is PRP!

Please post further replies there.
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Old 2006-12-02, 09:22   #6
Cruelty
 
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Check this out
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Old 2006-12-02, 18:35   #7
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Yes, huge
26773*2^2465343-1, 742147 digits.

20th of all times!
Note that now an entry to Top-100 requires binary exponent n>1.2M !
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Old 2007-01-17, 11:39   #8
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Someone, outside of this group I think has posted a monster

http://primes.utm.edu/primes/page.php?id=79192

21st largest prime every found!!!
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Old 2007-01-17, 12:44   #9
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That's L191, S. Banka who is (unfortunately ) not with us. He found 5 large primes in only one year, he began with 12121 project but now he is testing k=737 (=11*67) alone. He is now 13th by score!:surprised 4 of his 5 primes are currently in top-100, only Cooper and Heuer have more primes in top-100 while Grobstich has 4 too.

Last fiddled with by Kosmaj on 2007-01-17 at 12:46
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Old 2007-01-17, 12:57   #10
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Quote:
Originally Posted by Kosmaj View Post
... while Grobstich has 4 too.
... and Thomas has 4 in the Top-101.

Last fiddled with by Thomas11 on 2007-01-17 at 13:01
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Old 2007-01-25, 14:46   #11
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Congrats to David Underbakke (L99) who just reported new largest Sophie-Germain pair (51910 digits):
48047305725*2^172403-1
48047305725*2^172404-1

Only 10 days after the new twin record!
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