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Natalia Makarova Project scientist Send message Joined: 8 Feb 19 Deprecated: Creation of dynamic property BoincUser::$nposts is deprecated in /var/boincadm/prj/html/inc/forum.inc on line 613 Posts: 423 Credit: 0 RAC: 0 |
todo: check this: W 525725685315463739(6): 10 16 88 16 10 See https://boinc.progger.info/odlk/forum_thread.php?id=49&postid=5036#5036 525725685315463669: 0 10 70 72 82 84 100 102 190 192 208 210 220 222 282 292 527429414970847919: 0 14 48 50 78 80 102 104 138 140 162 164 192 194 228 242 528735672273276389: 0 54 60 62 78 80 102 104 138 140 162 164 180 182 188 242 529528572209967023: 0 18 66 68 78 80 108 110 126 128 156 158 168 170 218 236 Also U 525725685315463669(16): 10 60 2 10 2 16 2 88 |
Veronika Kerman Project administrator Volunteer developer Send message Joined: 3 Feb 19 Deprecated: Creation of dynamic property BoincUser::$nposts is deprecated in /var/boincadm/prj/html/inc/forum.inc on line 613 Posts: 667 Credit: 432,784 RAC: 0 |
OK. I verified that the tuple is identified correctly. We are dealing with group of 6 twin primes, which are also symmetric (12-tuple) and a part of larger symmetric 16 tuple. |
Natalia Makarova Project scientist Send message Joined: 8 Feb 19 Posts: 423 Credit: 0 RAC: 0 |
U 525725685315463669(16): 10 60 2 10 2 16 2 88 Please save the usual format in the database for 16-tuples 525725685315463669: 0 10 70 72 82 84 100 102 190 192 208 210 220 222 282 292 |
Veronika Kerman Project administrator Volunteer developer Send message Joined: 3 Feb 19 Posts: 667 Credit: 432,784 RAC: 0 |
There are symmetric tuples which are only partly made from twins. The question is how to present them? For example: 525725685315463669: 0 10 70 72 82 84 100 102 190 192 208 210 220 222 282 292 It's clear that this is 16-tuple, so it is listed with other 16-tuples. It will be also reported as symmetric group of 6 twins starting at 525725685315463739. The question is, should there be a note that the group of 6 twins is part of larger tuple? |
Natalia Makarova Project scientist Send message Joined: 8 Feb 19 Posts: 423 Credit: 0 RAC: 0 |
The question is, should there be a note that the group of 6 twins is part of larger tuple? No. |
Veronika Kerman Project administrator Volunteer developer Send message Joined: 3 Feb 19 Posts: 667 Credit: 432,784 RAC: 0 |
Batch 54: symmetric twin prime tuples - testing the application. The server side software is missing for the new fields, so the validator is disabled. Thanks for the reply Natalia. |
Veronika Kerman Project administrator Volunteer developer Send message Joined: 3 Feb 19 Posts: 667 Credit: 432,784 RAC: 0 |
First result from the new application: largest_twin_gap: 525725689650797957 490 The gap between those two primes is larger than one in your message. Expanded: 525725689650797957 525725689650797959 525725689650798449 525725689650798451. |
Natalia Makarova Project scientist Send message Joined: 8 Feb 19 Posts: 423 Credit: 0 RAC: 0 |
Expanded: 525725689650797957 525725689650797959 525725689650798449 525725689650798451. Yes, this is a new record. |
Natalia Makarova Project scientist Send message Joined: 8 Feb 19 Posts: 423 Credit: 0 RAC: 0 |
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Veronika Kerman Project administrator Volunteer developer Send message Joined: 3 Feb 19 Posts: 667 Credit: 432,784 RAC: 0 |
New record: 500306885940569681 724 I am just looking thru the result files on the server, because validator is not yet working. I see 16 out of 105 corrupted files, which suggests that there is a error in the app. |
Natalia Makarova Project scientist Send message Joined: 8 Feb 19 Posts: 423 Credit: 0 RAC: 0 |
New record: 500306885940569681 724 Dear participants! Maybe you know other records or articles that describe this problem. Please inform. I did not find on the Internet. Perhaps the Prime Grid project solves this problem. |
Veronika Kerman Project administrator Volunteer developer Send message Joined: 3 Feb 19 Posts: 667 Credit: 432,784 RAC: 0 |
There is a page on PolyMath related to prime gaps. But it is an other problem. The keyword "prime gaps" can lead to more results. |
Natalia Makarova Project scientist Send message Joined: 8 Feb 19 Posts: 423 Credit: 0 RAC: 0 |
Please look this Maximal gaps between twin primes up to 1.2 × 10^15 https://javascripter.net/math/primes/maximalgapsbetweenktuples.htm#2tuples But are there twins from consecutive primes (other than those at the beginning)? 1st twin pair: 2nd twin pair: Gap g2(p): See also in OEIS https://oeis.org/A113274 PS. Who can quickly check if there are twins from consecutive primes in the list shown? |
Natalia Makarova Project scientist Send message Joined: 8 Feb 19 Posts: 423 Credit: 0 RAC: 0 |
Note: the gap between the two twins primes here is calculated as the difference between the first numbers of twins. In our example 1st twin pair: 500306885940569681, 500306885940569683 2nd twin pair: 500306885940570407, 500306885940570409 Gap g2 (p) = 500306885940570407 - 500306885940569681 = 726 This does not change the essence of the largest gap between twins of consecutive primes. |
Natalia Makarova Project scientist Send message Joined: 8 Feb 19 Posts: 423 Credit: 0 RAC: 0 |
I started from scratch and got the following gaps for the twins of their consecutive primes [3, 5, 5, 7] 2 [5, 7, 11, 13] 6 [137, 139, 149, 151] 12 [1931, 1933, 1949, 1951] 18 [2969, 2971, 2999, 3001] 30 [20441, 20443, 20477, 20479] 36 [48677, 48679, 48731, 48733] 54 [173357, 173359, 173429, 173431] 72 [838247, 838249, 838349, 838351] 102 [4297091, 4297093, 4297199, 4297201] 108 [14982551, 14982553, 14982677, 14982679] 126 [30781187, 30781189, 30781319, 30781321] 132 [34570661, 34570663, 34570799, 34570801] 138 [43891037, 43891039, 43891187, 43891189] 150 [79167731, 79167733, 79167917, 79167919] 186 [875971469, 875971471, 875971667, 875971669] 198 [1209266801, 1209266803, 1209267011, 1209267013] 210 [2505898931, 2505898933, 2505899171, 2505899173] 240 [3399081821, 3399081823, 3399082067, 3399082069] 246 [5002002407, 5002002409, 5002002659, 5002002661] 252 [13600912607, 13600912609, 13600912889, 13600912891] 282 Am I not mistaken? Is there such a sequence in OEIS? I'll take a look now. I entered the search sequence 2, 6, 12, 18, 30, 36, 54, 72, 102, 108 That's what is reported Search: seq:2,6,12,18,30,36,54,72,102,108 There seems to be no such sequence. If I correctly calculated the gaps, a sequence can be created (similar to the sequence https://oeis.org/A113274). Then the sequence can be continued. Unfortunately, I cannot create sequences in OEIS, as I is blocked. Tomáš Brada I suggest you check my calculations and create a sequence in OEIS. Then you will continue this sequence in your project. |
Natalia Makarova Project scientist Send message Joined: 8 Feb 19 Posts: 423 Credit: 0 RAC: 0 |
I also found solutions [28261373771, 28261373773, 28261374059, 28261374061] 288 [31120423097, 31120423099, 31120423391, 31120423393] 294 [31153871741, 31153871743, 31153872047, 31153872049] 306 I am very interested in these results. The program on PARI/GP is slow. |
Veronika Kerman Project administrator Volunteer developer Send message Joined: 3 Feb 19 Posts: 667 Credit: 432,784 RAC: 0 |
I will send a workunit(s) to enumerate all k>=2 k-tuples of twin primes up to some comfortable number. |
Veronika Kerman Project administrator Volunteer developer Send message Joined: 3 Feb 19 Posts: 667 Credit: 432,784 RAC: 0 |
The asimilator has been adapted for the new app and batch 53 has been validated. Yes, there were some glitches, if you are going to ask about the strange wu status. Both SPT, STPT and TPT are now in database. The spt_list.php page shows only spt/stpt for now. The current largest gaps are: +--------------------+-----+---+-----------------+ | start | d | k | ofs | +--------------------+-----+---+-----------------+ | 500307392152057409 | 232 | 5 | 76 28 22 4 232 | | 500306885940569681 | 724 | 0 | | +--------------------+-----+---+-----------------+ (first row is from 1.st approach, second is 2.nd approach) |
Natalia Makarova Project scientist Send message Joined: 8 Feb 19 Posts: 423 Credit: 0 RAC: 0 |
I think that the SPT and STPT&TPT applications should work separately, because they will work in different ranges. The SPT application continues the range from 5.3*10^17. STPT&TPT applications must start earlier. |
Veronika Kerman Project administrator Volunteer developer Send message Joined: 3 Feb 19 Posts: 667 Credit: 432,784 RAC: 0 |
Here is sequence of ever increasing gaps between consecutive twin pairs. Number 3 is excluded, because my program works only for p>=5. The gap, as a difference between first prime of the twin, is in square brackets. twin_gap_seq: W 5(3): 4 4 [6] W 137(2): 10 [12] W 1931(2): 16 [18] W 2969(2): 28 [30] W 20441(2): 34 [36] W 48677(2): 52 [54] W 173357(2): 70 [72] W 838247(2): 100 [102] W 4297061(3): 28 106 [108] W 14982551(2): 124 [126] W 30781187(2): 130 [132] W 34570661(3): 136 46 [138] W 43891037(2): 148 [150] W 79167731(2): 184 [186] W 875971469(2): 196 [198] W 1209266801(2): 208 [210] W 2505898931(2): 238 [240] W 3399081821(2): 244 [246] W 5002002407(2): 250 [252] W 13600912607(2): 280 [282] W 28261373771(2): 286 [288] W 31120423097(3): 292 64 [294] W 31153871741(2): 304 [306] W 44725020167(2): 310 [312] W 59120474339(2): 316 [318] W 70906853447(2): 340 [342] W 143334302009(2): 346 [348] |
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