Tuo pitää jakaa kerran kahdella, että päästään parittomaan B. Sitten B+1 on 4 kertaa jaollinen kahdella, mutta ei kertaakaan kolmella. Se tarkoittaa, että ollaan ketjukorkeudessa menossa alhaalla. (B+1)/2⁴ antaa kaksi hyvin eri suurta alkutekijää 23 ja 13288937.
Näiden tietojen ja tutkimuksen perusteella voi uskoa, että kun seuraavaksi kerrotaan 3⁴:llä, vähennetään yksi ja jaetaan kahdella, lähdetään käymään pikku hiljaa läpi lisää alkutekijöitä. Koska menossa oleva luku A mod 4 ≡ 3 ja 4 on parillinen potenssi, ennuste on, ettei jakaudu heti enempää kahdella.
Tarkistus: Kyllä, tulee aiemman kahden sijaan kolme alkutekijää eikä jakaudu pienemmäksi. Teoreeman perusteella ketjulla on tuosta hyvät edellytykset kumpuilla monipuolisesti alkutekijämäärää lisäten. Itse asiassa voinkin ajaa koodillani lohkojen jonon:
3x+1, seed=4890328815;
lohko-nro | B | (n,r) -potenssit | A_0 3^n 3^r -1 | alkutekijät | m= edellisen kahdella jaon määrä
0 | 4890328815 | (4,0) | 24757289630 | 5 × 97 × 25522979 | m=1
1 | 12378644815 | (4,0) | 62666889380 | 5 × 29 × 108046361 | m=2
2 | 15666722345 | (1,1) | 23500083518 | 17 × 691178927 | m=1
3 | 11750041759 | (5,0) | 89226879614 | 257 × 173593151 | m=1
4 | 44613439807 | (6,0) | 508174962812 | 11 × 887 × 13020779 | m=2
5 | 127043740703 | (5,1) | 964738405970 | 5 × 983 × 98142259 | m=1
6 | 482369202985 | (1,0) | 723553804478 | 31649 × 11430911 | m=1
7 | 361776902239 | (5,0) | 2747243351384 | 7 × 19 × 79 × 239 × 136751 | m=3
8 | 343405418923 | (2,0) | 772662192578 | 29 × 13321761941 | m=1
9 | 386331096289 | (1,0) | 579496644434 | 2357 × 122930981 | m=1
10 | 289748322217 | (1,0) | 434622483326 | 97 × 8573 × 261323 | m=1
11 | 217311241663 | (6,0) | 2475310862078 | 1237655431039 | m=1
12 | 1237655431039 | (7,0) | 21146503341284 | 17 × 37 × 8404810549 | m=2
13 | 5286625835321 | (1,1) | 7929938752982 | 151 × 26258075341 | m=1
14 | 3964969376491 | (2,0) | 8921181097106 | 348389 × 12803477 | m=1
15 | 4460590548553 | (1,0) | 6690885822830 | 5 × 11 × 17 × 26161 × 136769 | m=1
16 | 3345442911415 | (3,0) | 11290869826028 | 13 × 5281 × 41115719 | m=2
17 | 2822717456507 | (2,1) | 6351114277142 | 23 × 6451 × 21402527 | m=1
18 | 3175557138571 | (2,0) | 7145003561786 | 457 × 10663 × 733123 | m=1
19 | 3572501780893 | (1,0) | 5358752671340 | 5 × 23 × 157 × 8089 × 9173 | m=2
20 | 1339688167835 | (2,1) | 3014298377630 | 5 × 301429837763 | m=1
21 | 1507149188815 | (4,0) | 7629942768380 | 5 × 107 × 3565393817 | m=2
22 | 1907485692095 | (6,1) | 21727454211530 | 5 × 383221 × 5669693 | m=1
23 | 10863727105765 | (1,0) | 16295590658648 | 7 × 38891 × 7482263 | m=3
24 | 2036948832331 | (2,0) | 4583134872746 | 53 × 2749 × 15728309 | m=1
25 | 2291567436373 | (1,0) | 3437351154560 | 5 × 10723 × 500873 | m=7
26 | 26854305895 | (3,0) | 90633282398 | 113 × 401032223 | m=1
27 | 45316641199 | (4,0) | 229415496074 | 114707748037 | m=1
28 | 114707748037 | (1,0) | 172061622056 | 8053 × 2670769 | m=3
29 | 21507702757 | (1,0) | 32261554136 | 7^2 × 29 × 2837927 | m=3
30 | 4032694267 | (2,0) | 9073562102 | 11 × 3907 × 105563 | m=1
31 | 4536781051 | (2,0) | 10207757366 | 5103878683 | m=1
32 | 5103878683 | (2,0) | 11483727038 | 7 × 349 × 2350333 | m=1
33 | 5741863519 | (5,0) | 43602276104 | 101 × 53963213 | m=3
34 | 5450284513 | (1,0) | 8175426770 | 5 × 7 × 5851 × 19961 | m=1
35 | 4087713385 | (1,0) | 6131570078 | 3065785039 | m=1
36 | 3065785039 | (4,0) | 15520536764 | 19 × 13331 × 15319 | m=2
37 | 3880134191 | (4,1) | 19643179346 | 7 × 17 × 82534367 | m=1
38 | 9821589673 | (1,0) | 14732384510 | 5 × 31 × 1447 × 32843 | m=1
39 | 7366192255 | (7,0) | 125858300498 | 7 × 8989878607 | m=1
40 | 62929150249 | (1,0) | 94393725374 | 13 × 1901 × 1909799 | m=1
41 | 47196862687 | (5,0) | 358401176036 | 59 × 569 × 607 × 4397 | m=2
42 | 89600294009 | (1,1) | 134400441014 | 7 × 29 × 3889 × 85121 | m=1
43 | 67200220507 | (2,0) | 151200496142 | 331 × 4283 × 53327 | m=1
44 | 75600248071 | (3,0) | 255150837242 | 7 × 571 × 1873 × 17041 | m=1
45 | 127575418621 | (1,0) | 191363127932 | 47840781983 | m=2
46 | 47840781983 | (5,1) | 363290938190 | 5 × 41 × 12197 × 72647 | m=1
47 | 181645469095 | (3,0) | 613053458198 | 859 × 1433 × 249017 | m=1
48 | 306526729099 | (2,0) | 689685140474 | 11^3 × 647 × 400441 | m=1
49 | 344842570237 | (1,0) | 517263855356 | 32213 × 4014403 | m=2
50 | 129315963839 | (6,1) | 1472989650614 | 457 × 17597 × 91583 | m=1
51 | 736494825307 | (2,0) | 1657113356942 | 131 × 151 × 191 × 219301 | m=1
52 | 828556678471 | (3,0) | 2796378789842 | 11 × 106189 × 1196999 | m=1
53 | 1398189394921 | (1,0) | 2097284092382 | 1048642046191 | m=1
54 | 1048642046191 | (4,0) | 5308750358846 | 11 × 241306834493 | m=1
55 | 2654375179423 | (5,0) | 20156661518750 | 5^5 × 29 × 111209167 | m=1
56 | 10078330759375 | (4,0) | 51021549469340 | 5 × 47161 × 54092947 | m=2
57 | 12755387367335 | (3,1) | 43049432364758 | 41 × 827 × 634816297 | m=1
58 | 21524716182379 | (2,0) | 48430611410354 | 24215305705177 | m=1
59 | 24215305705177 | (1,0) | 36322958557766 | 661 × 27475762903 | m=1
60 | 18161479278883 | (2,0) | 40863328377488 | 19 × 134418843347 | m=4
61 | 2553958023593 | (1,1) | 3830937035390 | 5 × 383093703539 | m=1
62 | 1915468517695 | (6,0) | 21818383584380 | 5 × 41 × 127 × 1471 × 142427 | m=2
63 | 5454595896095 | (5,1) | 41420837585978 | 112249 × 184504261 | m=1
64 | 20710418792989 | (1,0) | 31065628189484 | 7 × 41 × 863 × 2557 × 12263 | m=2
65 | 7766407047371 | (2,1) | 17474415856586 | 13^3 × 36809 × 108041 | m=1
66 | 8737207928293 | (1,0) | 13105811892440 | 5 × 17 × 43 × 448215181 | m=3
67 | 1638226486555 | (2,0) | 3686009594750 | 5^3 × 7 × 2106291197 | m=1
68 | 1843004797375 | (6,0) | 20992976520110 | 5 × 7 × 23 × 877 × 14867863 | m=1
69 | 10496488260055 | (3,0) | 35425647877688 | 17 × 101 × 109 × 23660887 | m=3
70 | 4428205984711 | (3,0) | 14945195198402 | 7 × 1067513942743 | m=1
71 | 7472597599201 | (1,0) | 11208896398802 | 139609 × 40143889 | m=1
72 | 5604448199401 | (1,0) | 8406672299102 | 7^2 × 11 × 47 × 8243 × 20129 | m=1
73 | 4203336149551 | (4,0) | 21279389257106 | 1553 × 4273 × 1603337 | m=1
74 | 10639694628553 | (1,0) | 15959541942830 | 5 × 1103017 × 1446899 | m=1
75 | 7979770971415 | (3,0) | 26931727028528 | 7 × 240461848469 | m=4
76 | 1683232939283 | (2,1) | 3787274113388 | 2927 × 323477461 | m=2
77 | 946818528347 | (2,1) | 2130341688782 | 19 × 271 × 367 × 733 × 769 | m=1
78 | 1065170844391 | (3,0) | 3594951599822 | 11 × 17 × 19 × 6053 × 83579 | m=1
79 | 1797475799911 | (3,0) | 6066480824702 | 19 × 159644232229 | m=1
80 | 3033240412351 | (6,0) | 34550504071946 | 19 × 50131 × 18136957 | m=1
81 | 17275252035973 | (1,0) | 25912878053960 | 5 × 283 × 829 × 2761307 | m=3
82 | 3239109756745 | (1,0) | 4858664635118 | 7 × 19 × 18265656523 | m=1
83 | 2429332317559 | (3,0) | 8198996571764 | 19 × 29 × 5903 × 630197 | m=2
84 | 2049749142941 | (1,1) | 3074623714412 | 541 × 1420805783 | m=2
85 | 768655928603 | (2,1) | 1729475839358 | 17203 × 50266693 | m=1
86 | 864737919679 | (6,0) | 9849905366354 | 73 × 419 × 161014571 | m=1
87 | 4924952683177 | (1,0) | 7387429024766 | 7 × 41 × 67 × 6379 × 30113 | m=1
88 | 3693714512383 | (9,0) | 141998794428230 | 5 × 29147 × 487181509 | m=1
89 | 70999397214115 | (2,0) | 159748643731760 | 5 × 1996858046647 | m=4
90 | 9984290233235 | (2,1) | 22464653024780 | 5 × 1123232651239 | m=2
91 | 5616163256195 | (2,1) | 12636367326440 | 5 × 11 × 13 × 29 × 73 × 1043531 | m=3
92 | 1579545915805 | (1,0) | 2369318873708 | 59 × 107 × 93826979 | m=2
93 | 592329718427 | (2,1) | 1332741866462 | 41 × 229 × 70973579 | m=1
94 | 666370933231 | (4,0) | 3373502849486 | 7 × 11 × 179 × 1787 × 68483 | m=1
95 | 1686751424743 | (3,0) | 5692786058510 | 5 × 191 × 379 × 7864159 | m=1
96 | 2846393029255 | (3,0) | 9606576473738 | 67 × 2579 × 3529 × 7877 | m=1
97 | 4803288236869 | (1,0) | 7204932355304 | 17 × 52977443789 | m=3
98 | 900616544413 | (1,0) | 1350924816620 | 5 × 181 × 1699 × 219649 | m=2
99 | 337731204155 | (2,1) | 759895209350 | 5^2 × 15197904187 | m=1
100 | 379947604675 | (2,0) | 854882110520 | 5 × 971 × 983 × 22391 | m=3
101 | 106860263815 | (3,0) | 360653390378 | 180326695189 | m=1
102 | 180326695189 | (1,0) | 270490042784 | 13 × 650216449 | m=5
103 | 8452813837 | (1,0) | 12679220756 | 14759 × 214771 | m=2
104 | 3169805189 | (1,1) | 4754707784 | 594338473 | m=3
105 | 594338473 | (1,0) | 891507710 | 5 × 17 × 179 × 29297 | m=1
106 | 445753855 | (9,0) | 17136275678 | 79^2 × 1372879 | m=1
107 | 8568137839 | (4,0) | 43376197814 | 269 × 80624903 | m=1
108 | 21688098907 | (2,0) | 48798222542 | 3581 × 6813491 | m=1
109 | 24399111271 | (3,0) | 82347000542 | 39419 × 1044509 | m=1
110 | 41173500271 | (4,0) | 208440845126 | 104220422563 | m=1
111 | 104220422563 | (2,0) | 234495950768 | 463 × 31654421 | m=4
112 | 14655996923 | (2,1) | 32975993078 | 7 × 47 × 131 × 163 × 2347 | m=1
113 | 16487996539 | (2,0) | 37097992214 | 19 × 229 × 4263157 | m=1
114 | 18548996107 | (2,0) | 41735241242 | 499 × 41818879 | m=1
115 | 20867620621 | (1,0) | 31301430932 | 61 × 128284553 | m=2
116 | 7825357733 | (1,1) | 11738036600 | 5^2 × 19 × 3088957 | m=3
117 | 1467254575 | (4,0) | 7427976290 | 5 × 7 × 2551 × 41597 | m=1
118 | 3713988145 | (1,0) | 5570982218 | 43 × 103 × 628921 | m=1
119 | 2785491109 | (1,0) | 4178236664 | 7^3 × 1522681 | m=3
120 | 522279583 | (5,0) | 3966060590 | 5 × 29 × 139 × 98389 | m=1
121 | 1983030295 | (3,0) | 6692727248 | 9343 × 44771 | m=4
122 | 418295453 | (1,1) | 627443180 | 5 × 7 × 13 × 344749 | m=2
123 | 156860795 | (2,1) | 352936790 | 5 × 599 × 58921 | m=1
124 | 176468395 | (2,0) | 397053890 | 5 × 31 × 569 × 2251 | m=1
125 | 198526945 | (1,0) | 297790418 | 148895209 | m=1
126 | 148895209 | (1,0) | 223342814 | 111671407 | m=1
127 | 111671407 | (4,0) | 565336502 | 277 × 769 × 1327 | m=1
128 | 282668251 | (2,0) | 636003566 | 11 × 2753 × 10501 | m=1
129 | 318001783 | (3,0) | 1073256020 | 5 × 59 × 909539 | m=2
130 | 268314005 | (1,1) | 402471008 | 3391 × 3709 | m=5
131 | 12577219 | (2,0) | 28298744 | 17 × 251 × 829 | m=3
132 | 3537343 | (6,0) | 40292558 | 20146279 | m=1
133 | 20146279 | (3,0) | 67993694 | 2221 × 15307 | m=1
134 | 33996847 | (4,0) | 172109042 | 7 × 12293503 | m=1
135 | 86054521 | (1,0) | 129081782 | 17 × 19 × 211 × 947 | m=1
136 | 64540891 | (2,0) | 145217006 | 11 × 67 × 98519 | m=1
137 | 72608503 | (3,0) | 245053700 | 5^2 × 73 × 33569 | m=2
138 | 61263425 | (1,1) | 91895138 | 4273 × 10753 | m=1
139 | 45947569 | (1,0) | 68921354 | 109 × 316153 | m=1
140 | 34460677 | (1,0) | 51691016 | 13^3 × 17 × 173 | m=3
141 | 6461377 | (1,0) | 9692066 | 4846033 | m=1
142 | 4846033 | (1,0) | 7269050 | 5^2 × 145381 | m=1
143 | 3634525 | (1,0) | 5451788 | 97 × 14051 | m=2
144 | 1362947 | (2,1) | 3066632 | 71 × 5399 | m=3
145 | 383329 | (1,0) | 574994 | 7 × 67 × 613 | m=1
146 | 287497 | (1,0) | 431246 | 257 × 839 | m=1
147 | 215623 | (3,0) | 727730 | 5 × 61 × 1193 | m=1
148 | 363865 | (1,0) | 545798 | 11 × 24809 | m=1
149 | 272899 | (2,0) | 614024 | 76753 | m=3
150 | 76753 | (1,0) | 115130 | 5 × 29 × 397 | m=1
151 | 57565 | (1,0) | 86348 | 21587 | m=2
152 | 21587 | (2,1) | 48572 | 12143 | m=2
153 | 12143 | (4,1) | 61478 | 59 × 521 | m=1
154 | 30739 | (2,0) | 69164 | 17291 | m=2
155 | 17291 | (2,1) | 38906 | 7^2 × 397 | m=1
156 | 19453 | (1,0) | 29180 | 5 × 1459 | m=2
157 | 7295 | (7,1) | 124658 | 157 × 397 | m=1
158 | 62329 | (1,0) | 93494 | 46747 | m=1
159 | 46747 | (2,0) | 105182 | 7 × 11 × 683 | m=1
160 | 52591 | (4,0) | 266246 | 239 × 557 | m=1
161 | 133123 | (2,0) | 299528 | 37441 | m=3
162 | 37441 | (1,0) | 56162 | 28081 | m=1
163 | 28081 | (1,0) | 42122 | 21061 | m=1
164 | 21061 | (1,0) | 31592 | 11 × 359 | m=3
165 | 3949 | (1,0) | 5924 | 1481 | m=2
166 | 1481 | (1,1) | 2222 | 11 × 101 | m=1
167 | 1111 | (3,0) | 3752 | 7 × 67 | m=3
168 | 469 | (1,0) | 704 | 11 | m=6
169 | 11 | (2,1) | 26 | 13 | m=1
170 | 13 | (1,0) | 20 | 5 | m=2
171 | 5 | (1,1) | 8 | 1 | m=3
172 | 1 | - (stop)