mersenneforum.org Search Results
 Register FAQ Search Today's Posts Mark Forums Read

 Showing results 1 to 7 of 7 Search took 0.01 seconds. Search: Posts Made By: Greenbank
 Forum: Octoproth Search 2006-01-20, 16:04 Replies: 15 Views: 11,447 Posted By Greenbank OK, n=56 is complete! Estimate was 280214. ... OK, n=56 is complete! Estimate was 280214. Final count after isprime() PARI checking script: 285415 2^n = 72057594037927936 so I used a kmax of 72060T. Output:
 Forum: Octoproth Search 2006-01-19, 12:35 Replies: 15 Views: 11,447 Posted By Greenbank n=55 [0,1E16] = 229947 n=55 [1E16,2E16] =... n=55 [0,1E16] = 229947 n=55 [1E16,2E16] = 214250 n=55 [2E16,3E16] = 211102 n=55 [3E16,3.61E16] = 131672 Every 3-prp output by your program was indeed a prime! None failed the tests with PARI. ...
 Forum: Octoproth Search 2006-01-16, 13:03 Replies: 15 Views: 11,447 Posted By Greenbank If I put my whole G5 on it I can have n=55 done... If I put my whole G5 on it I can have n=55 done in a shade under 2 days. I think this may be the limit of computing all Octoproths for a specific n. Let me check Robert's estimation formula:- ...
 Forum: Octoproth Search 2006-01-16, 11:09 Replies: 15 Views: 11,447 Posted By Greenbank Yeah, I meant to say 2^55 ~ 3.6E16. I was just... Yeah, I meant to say 2^55 ~ 3.6E16. I was just trying to point out that 3E15 was an order of magnitude out. 2^55 = 36028797018963968 3.6E16 = 36000000000000000 robert44444uk, I'll send you an...
 Forum: Octoproth Search 2006-01-16, 08:41 Replies: 15 Views: 11,447 Posted By Greenbank 2^55 = 3.6E16 So if you've done to 3e15 then... 2^55 = 3.6E16 So if you've done to 3e15 then you've only done 8.3%
 Forum: Octoproth Search 2006-01-13, 16:00 Replies: 15 Views: 11,447 Posted By Greenbank Nice work. f(49) = 55410 real count is... Nice work. f(49) = 55410 real count is 56905.
 Forum: Octoproth Search 2006-01-13, 13:59 Replies: 15 Views: 11,447 Posted By Greenbank Number of octoproths per n All ranges checked from k=1 to 2^n (where 2^n-k would be 0). All primes verified with PARI 2.1.7. n<=26 op=0 n=27 op=1 n=28 op=2 n=29 op=1 n=30 op=1 n=31 op=2
 Showing results 1 to 7 of 7

All times are UTC. The time now is 21:33.

Sun May 22 21:33:09 UTC 2022 up 38 days, 19:34, 0 users, load averages: 0.79, 1.00, 1.10