Message boards :
Code and Servers :
Symmetric Prime Tuples development
Message board moderation
Previous · 1 · 2 · 3 · 4 · 5 · 6 · 7 · 8 . . . 12 · Next
Author | Message |
---|---|
Natalia Makarova Project scientist Send message Joined: 8 Feb 19 Deprecated: Creation of dynamic property BoincUser::$nposts is deprecated in /var/boincadm/prj/html/inc/forum.inc on line 613 Posts: 423 Credit: 0 RAC: 0 |
This tuple was probably found by nenym. Lucky one! This is a Christmas present :) |
Natalia Makarova Project scientist Send message Joined: 8 Feb 19 Posts: 423 Credit: 0 RAC: 0 |
My archive has the following 24-tuples 22930603692243271: 0 70 76 118 136 156 160 178 202 222 238 250 378 390 406 426 450 468 472 492 510 552 558 628 34984922852185283: 0 26 66 74 80 96 104 126 204 206 216 236 258 278 288 290 368 390 398 414 420 428 468 494 60960572612579749: 0 30 58 64 72 82 84 102 120 154 160 174 238 252 258 292 310 328 330 340 348 354 382 412 481408770994035947: 0 20 54 60 72 86 90 110 132 210 222 242 264 284 296 374 396 416 420 434 446 452 486 506 492720459594614777: 0 30 32 54 80 110 164 180 204 234 264 282 374 392 422 452 476 492 546 576 602 624 626 656 675424273001524577: 0 12 24 26 60 72 110 126 152 156 186 200 306 320 350 354 380 396 434 446 480 482 494 506 678456599278876927: 0 12 36 66 70 126 130 192 202 214 274 300 376 402 462 474 484 546 550 606 610 640 664 676 794297921067358991: 0 6 12 38 86 98 126 210 216 306 308 318 320 330 332 422 428 512 540 552 600 626 632 638 Perhaps, several tuples found in the Stop@home project are missing. 26-tuple is still unknown! |
Veronika Kerman Project administrator Volunteer developer Send message Joined: 3 Feb 19 Deprecated: Creation of dynamic property BoincUser::$nposts is deprecated in /var/boincadm/prj/html/inc/forum.inc on line 613 Posts: 667 Credit: 432,784 RAC: 0 |
I started working on application to search for symmetric and not-symmetric tuples of twin primes. |
Natalia Makarova Project scientist Send message Joined: 8 Feb 19 Posts: 423 Credit: 0 RAC: 0 |
I started working on application to search for symmetric and not-symmetric tuples of twin primes. Fine! XAVER fills the OEIS A330278 sequence. I also have several solutions for this sequence. I am looking for a second symmetric 14-tuples from twin primes. I do not yet work with not-symmetric tuples. |
Veronika Kerman Project administrator Volunteer developer Send message Joined: 3 Feb 19 Posts: 667 Credit: 432,784 RAC: 0 |
Just to verify that i did not introduce problems, searching for spt k=5: T 500100101650071059(5): 18 42 42 T 500100101650397459(5): 18 42 42 that is: 500100101650071059: 0 18 60 102 120 500100101650397459: 0 18 60 102 120 |
Veronika Kerman Project administrator Volunteer developer Send message Joined: 3 Feb 19 Posts: 667 Credit: 432,784 RAC: 0 |
Also T 500100101684488021(7): 78 60 12 12 500100101684488021: 0 78 138 150 162 222 300 |
Veronika Kerman Project administrator Volunteer developer Send message Joined: 3 Feb 19 Posts: 667 Credit: 432,784 RAC: 0 |
Some twin prime tuples (asymetric): W 500100101711358227(5): 70 88 148 28 W 500100101958716447(5): 10 46 178 22 that is 500100101711358227: 0 2 70 72 162 164 312 314 342 344 500100101958716447: 0 2 10 12 58 60 238 240 262 264 I will keep the accepted format for output, but in database, the short format is used. |
Natalia Makarova Project scientist Send message Joined: 8 Feb 19 Posts: 423 Credit: 0 RAC: 0 |
OEIS evolving sequences of non-symmetric tuples from consecutive pairs of twin primes 1. Start of a string of exactly 7 consecutive (but disjoint) pairs of twin primes. https://oeis.org/A035795 2. Start of a string of exactly 8 consecutive (but disjoint) pairs of twin primes. https://oeis.org/A263205 3. Start of a string of exactly 9 consecutive (but disjoint) pairs of twin primes. https://oeis.org/A259034 And also for k>9, such sequences are not yet in OEIS. OEIS evolving sequence of symmetric tuples from consecutive pairs of twin primes Primes starting 12-tuples of consecutive primes that have symmetrical gaps about their mean and form 6 pairs of twin primes. https://oeis.org/A330278 And also for k>12 (or k>6 pairs), such sequences are not yet in OEIS. More than 10,000 members in the sequence are not required to be searched. Of course, less is possible. |
Veronika Kerman Project administrator Volunteer developer Send message Joined: 3 Feb 19 Posts: 667 Credit: 432,784 RAC: 0 |
Group of 7 consecutive twin primes 500308655992846037: k=7 52 148 4 40 118 16 |
Natalia Makarova Project scientist Send message Joined: 8 Feb 19 Posts: 423 Credit: 0 RAC: 0 |
Group of 7 consecutive twin primes Yes, the asymmetric tuple, unfolded [500308655992846037, 500308655992846039, 500308655992846091, 500308655992846093, 500308655992846241, 500308655992846243, 500308655992846247, 500308655992846249, 500308655992846289, 500308655992846291, 500308655992846409, 500308655992846411, 500308655992846427, 500308655992846429] Suitable for sequence Start of a string of exactly 7 consecutive (but disjoint) pairs of twin primes. |
Veronika Kerman Project administrator Volunteer developer Send message Joined: 3 Feb 19 Posts: 667 Credit: 432,784 RAC: 0 |
Results from the new application are valid and identical to the reference batch. And another asymmetric 7: W 500306715408864029(7): 28 40 46 28 10 58 |
Veronika Kerman Project administrator Volunteer developer Send message Joined: 3 Feb 19 Posts: 667 Credit: 432,784 RAC: 0 |
|
Natalia Makarova Project scientist Send message Joined: 8 Feb 19 Posts: 423 Credit: 0 RAC: 0 |
Todo: add check for largest distance between twins. My current maximum is 214 2184916780531349: 0 2 18 20 42 44 258 260 282 284 300 302 |
Veronika Kerman Project administrator Volunteer developer Send message Joined: 3 Feb 19 Posts: 667 Credit: 432,784 RAC: 0 |
Todo: Optimize the palindrome search. Number of comparisons can be reduced by checking the center pair (even+odd) first. |
Veronika Kerman Project administrator Volunteer developer Send message Joined: 3 Feb 19 Posts: 667 Credit: 432,784 RAC: 0 |
Note: every symmetric k-tuple is also a symmetric (k-2)-tuple. Question: Should the smaller tuples derived from larger tuple also appear in the results? |
Natalia Makarova Project scientist Send message Joined: 8 Feb 19 Posts: 423 Credit: 0 RAC: 0 |
Note: every symmetric k-tuple is also a symmetric (k-2)-tuple. Yes, they are appearing now. Example 528050771271601399: 0 22 48 52 82 90 94 112 120 138 142 150 180 184 210 232 528050771271601393: 0 6 28 54 58 88 96 100 118 126 144 148 156 186 190 216 238 244 528050771271601327: 0 66 72 94 120 124 154 162 166 184 192 210 214 222 252 256 282 304 310 376 528050771271601321: 0 6 72 78 100 126 130 160 168 172 190 198 216 220 228 258 262 288 310 316 382 388 528050771271601307: 0 14 20 86 92 114 140 144 174 182 186 204 212 230 234 242 272 276 302 324 330 396 402 416 I think this should be so in the future. |
Veronika Kerman Project administrator Volunteer developer Send message Joined: 3 Feb 19 Posts: 667 Credit: 432,784 RAC: 0 |
Note: every symmetric k-tuple is also a symmetric (k-2)-tuple. I am working on the application code currently. With the optimization to the application, only the largest tuple is reported. Should I work extra to also report the smaller tuples as well? |
Natalia Makarova Project scientist Send message Joined: 8 Feb 19 Posts: 423 Credit: 0 RAC: 0 |
I am working on the application code currently. With the optimization to the application, only the largest tuple is reported. Should I work extra to also report the smaller tuples as well? It will be inconvenient for me. For example, I will not have a full database for 16-tuples, but I have to work constantly with these tuples (search for squares). In general, it is better to have a complete database for each k. So it was in the original program by Belyshev. I see no reason to change this. |
Veronika Kerman Project administrator Volunteer developer Send message Joined: 3 Feb 19 Posts: 667 Credit: 432,784 RAC: 0 |
I got the program working! 525725685000000000..525725686026800003 nprime: 25165023 primes: tuples: T 525725685482103023(12): 8 30 42 18 10 110 twins: W 525725685315463739(6): 10 16 88 16 10 twin_tuples: U 525725685041603087(8): 2 28 2 22 U 525725685145432661(8): 2 28 2 76 U 525725685315463669(16): 10 60 2 10 2 16 2 88 U 525725685432929519(8): 2 28 2 10 twin_cnt: status: 1 sieve_init_ms720 To make it convenient for you: The validator will insert the smaller tuples from one larger into the database, so the database of k-tuples can be complete. |
Veronika Kerman Project administrator Volunteer developer Send message Joined: 3 Feb 19 Posts: 667 Credit: 432,784 RAC: 0 |
todo: check this: W 525725685315463739(6): 10 16 88 16 10 |
©2024 Veronika Kerman