20111102, 23:18  #408  
Just call me Henry
"David"
Sep 2007
Cambridge (GMT/BST)
13272_{8} Posts 
Quote:
Code:
[20111010 16:23:50 GMT] 10886318*3^2401811: Prime returned by david1@mdds.me.uk using pfgw.exe (Prover: pfgw.exe)! [20111012 17:47:38 GMT] 11005406*3^2341731: Prime returned by david1@mdds.me.uk using pfgw.exe (Prover: pfgw.exe)! [20111012 18:56:53 GMT] 11543008*3^1149921: Prime returned by david1@mdds.me.uk using pfgw.exe (Prover: pfgw.exe)! [20111012 20:11:51 GMT] 11926424*3^1192991: Prime returned by david1@mdds.me.uk using pfgw.exe (Prover: pfgw.exe)! [20111012 21:25:48 GMT] 12518444*3^1111001: Prime returned by david1@mdds.me.uk using pfgw.exe (Prover: pfgw.exe)! [20111027 10:31:52 GMT] 14523304*3^2495321: Prime returned by david1@mdds.me.uk using pfgw.exe (Prover: pfgw.exe)! [20111027 14:07:09 GMT] 16571998*3^1517211: Prime returned by david1@mdds.me.uk using pfgw.exe (Prover: pfgw.exe)! [20111031 08:45:16 GMT] 18232358*3^1558361: Prime returned by david1@mdds.me.uk using pfgw.exe (Prover: pfgw.exe)! [20111101 16:44:05 GMT] 19379356*3^1230811: Prime returned by david1@mdds.me.uk using pfgw.exe (Prover: pfgw.exe)! [20111102 06:17:26 GMT] 19885204*3^2073851: Prime returned by david1@mdds.me.uk using pfgw.exe (Prover: pfgw.exe)! 

20111102, 23:36  #409 
May 2007
Kansas; USA
11×937 Posts 

20111103, 07:14  #410  
Just call me Henry
"David"
Sep 2007
Cambridge (GMT/BST)
1011010111010_{2} Posts 
Quote:
edit: Sent. Last fiddled with by henryzz on 20111103 at 07:33 

20111127, 22:48  #411 
Just call me Henry
"David"
Sep 2007
Cambridge (GMT/BST)
1011010111010_{2} Posts 
12850412*3^2875061 is prime
Pretty certain this is my biggest nonbase 2 prime so far. 
20111128, 00:09  #412 
Jun 2008
Wollongong, .au
3×61 Posts 

20111208, 10:25  #413 
Just call me Henry
"David"
Sep 2007
Cambridge (GMT/BST)
5818_{10} Posts 
Didn't take me long to beat it.
14028218*3^3423261 is prime k=1015M is tested to 350k k=1520M is tested to 300k 
20120211, 14:50  #414  
Just call me Henry
"David"
Sep 2007
Cambridge (GMT/BST)
2·2,909 Posts 
Quote:
k=1015M is tested to 425k k=16874152 is tested to 412k k=1720M are still at 300k Based on 510M I should expect 1.67 more primes from this range. Of course this range is larger than k=510M so that doesn't mean much 

20120213, 15:35  #415  
Just call me Henry
"David"
Sep 2007
Cambridge (GMT/BST)
2·2,909 Posts 
Quote:
k=16874152 is tested to 425k 

20120505, 23:10  #416 
Just call me Henry
"David"
Sep 2007
Cambridge (GMT/BST)
2·2,909 Posts 
Just been applying some probability to my base 3 work.
From 250k500k, 12ks remaining at 250k and 48389 candidates sieved to 6T. The columns marked crus include stopping the search after a prime has been found for a k. This calculation relies on the ks all having the same weight but that shouldn't make too much difference. Code:
n n primes at least n primes n primes crus at least n primes crus 0 0.212% 100% 0.212% 100% 1 1.307% 99.788% 1.707% 99.788% 2 4.021% 98.481% 6.292% 98.081% 3 8.251% 94.460% 14.056% 91.788% 4 12.696% 86.209% 21.195% 77.732% 5 15.629% 73.512% 22.726% 56.538% 6 16.032% 57.884% 17.768% 33.812% 7 14.096% 41.852% 10.206% 16.044% 8 10.844% 27.756% 4.275% 5.837% 9 7.415% 16.912% 1.273% 1.562% 10 4.564% 9.497% 0.256% 0.289% 11 2.553% 4.933% 0.031% 0.033% 12 1.309% 2.380% 0.002% 0.002% This functionally should reach the odds of prime spreadsheet in the near future. Returning back to this search I have 4 primes so far and the most likely outcome is 5 primes using crus style searching rather that the 6 primes the standard method suggests so I expect 1 more prime. The expected number of primes is 4.815 with crus style searching and 6.155 with standard searching. 
20120526, 15:08  #417 
Just call me Henry
"David"
Sep 2007
Cambridge (GMT/BST)
16BA_{16} Posts 
ks 10M20M are all at 425k continuing

20120528, 07:29  #418 
"Curtis"
Feb 2005
Riverside, CA
1001001000010_{2} Posts 
Taking 2000M to 2050M.

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