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我的思路:先找q的素数,然后解上面的方程。4 ^8 p4 e; W4 K4 V( _7 D5 E7 H matlab选1-998内的素数; p9 E |& j9 w2 _% [; i4 ^) T n=2:1000; / j7 [$ s+ u. v7 u% a6 lfor i=1:998# u% _0 P/ H5 d- |1 f2 O5 K. u6 | for j=(i+1):9991 L; c& {) O1 K2 ^2 I5 Q a=rem(n(j),n(i));' i! C* J3 p8 D+ _& z if a==0& {5 p# K# E7 b* W n(j)=0; ! U5 t, ^' I- v K2 G7 B3 zend8 [# E: V: k# a$ H* o end : X& d! Z/ J+ C ~9 e4 kend 8 s8 B$ \8 e2 p/ b0 u& ?n(find(n==0))=[];- `' ^3 O8 P6 f# ^1 d6 F @5 V $ W9 ^0 X" T' D0 M
2 |
3 |
1.44224957 |
3 |
7 |
1.912931183 |
5 |
21 |
2.758924176 |
7 |
43 |
3.50339806 |
11 |
111 |
4.805895534 |
13 |
157 |
5.394690712 |
17 |
273 |
6.487154117 |
19 |
343 |
7 |
23 |
507 |
7.973873099 |
29 |
813 |
9.333191608 |
31 |
931 |
9.76449739 |
37 |
1333 |
11.00550688 |
41 |
1641 |
11.79513349 |
43 |
1807 |
12.18015227 |
47 |
2163 |
12.93258991 |
53 |
2757 |
14.02207402 |
59 |
3423 |
15.07077663 |
61 |
3661 |
15.41226885 |
67 |
4423 |
16.41492791 |
71 |
4971 |
17.06663581 |
73 |
5257 |
17.3878543 |
79 |
6163 |
18.33428829 |
83 |
6807 |
18.95186337 |
89 |
7833 |
19.85985358 |
97 |
9313 |
21.03923127 |
101 |
10101 |
21.6166367 |
103 |
10507 |
21.90246075 |
107 |
11343 |
22.46859817 |
109 |
11773 |
22.7490037 |
113 |
12657 |
23.30470412 |
127 |
16003 |
25.1999958 |
131 |
17031 |
25.72843577 |
137 |
18633 |
26.51109065 |
139 |
19183 |
26.76941264 |
149 |
22053 |
28.04287649 |
151 |
22651 |
28.29409409 |
157 |
24493 |
29.04116232 |
163 |
26407 |
29.77874255 |
167 |
27723 |
30.26542255 |
173 |
29757 |
30.98820224 |
179 |
31863 |
31.70264916 |
181 |
32581 |
31.93901144 |
191 |
36291 |
33.10800243 |
193 |
37057 |
33.33932115 |
197 |
38613 |
33.7995705 |
199 |
39403 |
34.02852278 |
211 |
44311 |
35.3864653 |
223 |
49507 |
36.718833 |
227 |
51303 |
37.15759418 |
229 |
52213 |
37.37600527 |
233 |
54057 |
37.81092599 |
239 |
56883 |
38.45866143 |
241 |
57841 |
38.67336223 |
251 |
62751 |
39.73808036 |
257 |
65793 |
40.37010663 |
263 |
68907 |
40.99722369 |
269 |
72093 |
41.61958059 |
271 |
73171 |
41.82599971 |
277 |
76453 |
42.44222831 |
281 |
78681 |
42.85057201 |
283 |
79807 |
43.05401541 |
293 |
85557 |
44.06412825 |
307 |
93943 |
45.45916717 |
311 |
96411 |
45.85382078 |
313 |
97657 |
46.05051162 |
317 |
100173 |
46.44263941 |
331 |
109231 |
47.80228276 |
337 |
113233 |
48.37908734 |
347 |
120063 |
49.33287172 |
349 |
121453 |
49.52252147 |
353 |
124257 |
49.9007364 |
359 |
128523 |
50.46538817 |
367 |
134323 |
51.21338253 |
373 |
138757 |
51.77081086 |
379 |
143263 |
52.32525423 |
383 |
146307 |
52.69325599 |
389 |
150933 |
53.24286311 |
397 |
157213 |
53.97129247 |
401 |
160401 |
54.33366789 |
409 |
166873 |
55.05482137 |
419 |
175143 |
55.94967843 |
421 |
176821 |
56.12779065 |
431 |
185331 |
57.01415469 |
433 |
187057 |
57.19060028 |
439 |
192283 |
57.71831311 |
443 |
195807 |
58.06878482 |
449 |
201153 |
58.59251925 |
457 |
208393 |
59.28721395 |
461 |
212061 |
59.633038 |
463 |
213907 |
59.80557436 |
467 |
217623 |
60.14990295 |
479 |
228963 |
61.17703654 |
487 |
236683 |
61.85702399 |
491 |
240591 |
62.19561871 |
499 |
248503 |
62.87006056 |
503 |
252507 |
63.20592731 |
509 |
258573 |
63.70806161 |
521 |
270921 |
64.70644746 |
523 |
273007 |
64.87209562 |
541 |
292141 |
66.35355113 |
547 |
298663 |
66.84369892 |
557 |
309693 |
67.6566458 |
563 |
316407 |
68.14207607 |
569 |
323193 |
68.62578342 |
571 |
325471 |
68.78664052 |
577 |
332353 |
69.26808817 |
587 |
343983 |
70.06680697 |
593 |
351057 |
70.54385883 |
599 |
358203 |
71.01930309 |
601 |
360601 |
71.17743099 |
607 |
367843 |
71.65076506 |
613 |
375157 |
72.12254081 |
617 |
380073 |
72.4362023 |
619 |
382543 |
72.59277856 |
631 |
397531 |
73.52871909 |
641 |
410241 |
74.30414149 |
643 |
412807 |
74.45874027 |
647 |
417963 |
74.76745751 |
653 |
425757 |
75.22934242 |
659 |
433623 |
75.68981375 |
661 |
436261 |
75.84299304 |
673 |
452257 |
76.75884523 |
677 |
457653 |
77.06291591 |
683 |
465807 |
77.51790083 |
691 |
476791 |
78.12247907 |
701 |
490701 |
78.87492894 |
709 |
501973 |
79.47431366 |
719 |
516243 |
80.22038192 |
727 |
527803 |
80.81474709 |
733 |
536557 |
81.25909011 |
739 |
545383 |
81.70222155 |
743 |
551307 |
81.99697589 |
751 |
563251 |
82.58490188 |
757 |
572293 |
83.02447626 |
761 |
578361 |
83.31688031 |
769 |
590593 |
83.90015537 |
773 |
596757 |
84.19103347 |
787 |
618583 |
85.20517907 |
797 |
634413 |
85.92588711 |
809 |
653673 |
86.78676807 |
811 |
656911 |
86.92983289 |
821 |
673221 |
87.64340023 |
823 |
676507 |
87.78576503 |
827 |
683103 |
88.07014896 |
829 |
686413 |
88.21216883 |
839 |
703083 |
88.92056203 |
853 |
726757 |
89.90760064 |
857 |
733593 |
90.18861678 |
859 |
737023 |
90.32896075 |
863 |
743907 |
90.60932222 |
877 |
768253 |
91.5871943 |
881 |
775281 |
91.86562772 |
883 |
778807 |
92.00468628 |
887 |
785883 |
92.28248869 |
907 |
821743 |
93.66528763 |
911 |
829011 |
93.94062192 |
919 |
843643 |
94.49008416 |
929 |
862113 |
95.17467402 |
937 |
877033 |
95.72057783 |
941 |
884541 |
95.99294653 |
947 |
895863 |
96.40077678 |
953 |
907257 |
96.80774618 |
967 |
934123 |
97.75403402 |
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