我的思路:先找q的素数,然后解上面的方程。
2 t9 |# ]9 B: o1 S- k2 g Zmatlab选1-998内的素数4 [ m! n! z; u9 {! Y2 s
n=2:1000;2 ^8 ~& o6 g9 @, Y1 A
for i=1:998
5 `! f+ O9 u! o1 |; xfor j=(i+1):999
5 b. r' C/ o2 ^9 Y1 E* Fa=rem(n(j),n(i));
6 J* } S8 Q* v) vif a==08 r% A# H8 k; z* n/ h- o* c* W
n(j)=0;. H# ^# l" B5 M; D$ X: j; F# K
end
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n(find(n==0))=[];" B" U6 v% g3 f0 u4 ]- [, F
9 c" F8 d) I2 b, c6 m" G6 X
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 | 3 S& }- C: i: G! Z$ v
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