20030621, 01:03  #1 
Sep 2002
2·131 Posts 
Status of 210885
L15
Here is the current list of primes for the sequence 210885*2^n1 n={2, 4, 7, 11, 12, 19, 31, 33, 36, 46, 67, 73, 74, 86, 89, 112, 116, 156, 213, 217, 223, 260, 275, 276, 290, 351, 355, 370, 374, 529, 604, 607, 633, 651, 693, 705, 729, 799, 836, 856, 867, 886, 1005, 1036, 1162, 1190, 1479, 1862, 2219, 2449, 2786, 2875, 2925, 2996, 3980, 4736, 4824, 5001, 5331, 5595, 9551, 11270, 11403, 12530, 12573, 12804, 13351, 13416, 14764, 16595, 17290, 17732, 18299, 18991, 24974, 26794, 27723, 31126, 32896, 34037, 34224, 54044, 54716, 55336, 57180, 63549, 69671, 76716, 87224, 103466, 109235, 115579, 124415, 124985, 126773, 145659, ...} Joss 
20030801, 01:01  #2 
43A_{16} Posts 
Thats really nice!
But unfortunately I dont encourage everyone to post primes less than the minimum requirement. It takes up to much disc space in the forum for every one to do this. :( Thank you, Very nice 15k though! :( 
20030801, 06:20  #3 
"Mike"
Aug 2002
8045_{10} Posts 
If that was all it was it wouldn't be so bad...
Listing all the digits is not a good idea... 
20030910, 23:21  #4 
Sep 2002
2·131 Posts 
210885*2^1566551 is prime and is the 96th prime in the sequence.
joss 
20030919, 13:47  #5 
Sep 2002
2×131 Posts 
210885*2^1640591 is prime and is the 97th in sequence
Joss 
20030919, 16:45  #6 
Aug 2003
Upstate NY, USA
146_{16} Posts 
cmon 100  :)

20031016, 17:53  #7 
Sep 2002
2×131 Posts 
210885*2^1838151 is prime and is the 98th in sequence
Joss 
20031022, 17:28  #8 
Sep 2002
2×131 Posts 
210885 195687 is also prime!
and since I miscounted the first ones, this is the 100th in the sequence Joss 
20031105, 13:34  #9 
Sep 2002
406_{8} Posts 
210885*2^2130291 is prime! and is the 101st in the sequence
Joss L15 Last fiddled with by jocelynl on 20031105 at 13:35 
20031115, 21:39  #10 
Aug 2002
Minneapolis, MN
2^{2}×3×19 Posts 
Josh,
How did you pick this 15k? I don't see it listed in the select a 15k thread... I'm almost done testing the group of 15k's that I selected, and this one has a much lower #of tests to primes found then the other ones! 16995 is the next closest, with about the same number of tests needed for n < 100,000, but 210885 has 13 more primes in the same range!!! (FYI  16995 has 90 primes in it's series up to n=282003) I should have all the numbers complete in a day or two. I'll post em' all to compare when they are done. The reason I was wondering how you picked it was to see if there is a way for us to try some other 15k's that have the same or better ratio of primes per # of tests. Thanks!! 
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