Twin Prime Curta

A twin prime is a prime number which is separated from another prime number by only two counts.

This page lists the first of each pair of twin prime numbers up to 89897, and also above 500000 up to 589859. Use this list to check whether your Curta happens to have a twin prime number for its serial number.

This list is from: http://primes.utm.edu/lists/small/10ktwins.txt

Only the first (lower) of each pair of the twin primes is listed.

By adding 2 to each number in this list you arrive at the higher of the twin prime pair. If your Curta has a serial number that is on this list then that number is the lower of a pair of twin prime set. If your Curta has a serial number that is two counts higher than one of the numbers in this list then it has a serial number that is the higher of a twin prime set.

So, as an example, the number 11 has a twin prime 13. The numbers 11 and 13 are a twin primes set. The numbers 17 and 19 are another twin prime set. Likewise, the numbers 3 and 5 are also a twin prime set. The reason the number 5 is on the list is because it, too, has its own higher twin prime...the number 7.

For a list of all prime numbers (both "regular" and twin primes) within the serial number range of the Curtas see PrimeNumberCurta.

TYPE I

3 5 11 17 29 41 59 71 101 107 137 149 179 191 197 227 239 269 281 311 347 419 431 461 521 569 599 617 641 659 809 821 827 857 881 1019 1031 1049 1061 1091 1151 1229 1277 1289 1301 1319 1427 1451 1481 1487 1607 1619 1667 1697 1721 1787 1871 1877 1931 1949 1997 2027 2081 2087 2111 2129 2141 2237 2267 2309 2339 2381 2549 2591 2657 2687 2711 2729 2789 2801 2969 2999 3119 3167 3251 3257 3299 3329 3359 3371 3389 3461 3467 3527 3539 3557 3581 3671 3767 3821 3851 3917 3929 4001 4019 4049 4091 4127 4157 4217 4229 4241 4259 4271 4337 4421 4481 4517 4547 4637 4649 4721 4787 4799 4931 4967 5009 5021 5099 5231 5279 5417 5441 5477 5501 5519 5639 5651 5657 5741 5849 5867 5879 6089 6131 6197 6269 6299 6359 6449 6551 6569 6659 6689 6701 6761 6779 6791 6827 6869 6947 6959 7127 7211 7307 7331 7349 7457 7487 7547 7559 7589 7757 7877 7949 8009 8087 8219 8231 8291 8387 8429 8537 8597 8627 8819 8837 8861 8969 8999 9011 9041 9239 9281 9341 9419 9431 9437 9461 9629 9677 9719 9767 9857 9929 10007 10037 10067 10091 10139 10271 10301 10331 10427 10457 10499 10529 10709 10859 10889 10937 11057 11069 11117 11159 11171 11351 11489 11549 11699 11717 11777 11831 11939 11969 12041 12071 12107 12161 12239 12251 12377 12539 12611 12821 12917 13001 13007 13217 13337 13397 13679 13691 13709 13721 13757 13829 13877 13901 13931 13997 14009 14081 14249 14321 14387 14447 14549 14561 14591 14627 14867 15137 15269 15287 15329 15359 15581 15641 15647 15731 15737 15887 15971 16061 16067 16139 16187 16229 16361 16451 16631 16649 16691 16829 16901 16979 17027 17189 17207 17291 17387 17417 17489 17579 17597 17657 17681 17747 17789 17837 17909 17921 17957 17987 18041 18047 18059 18119 18131 18251 18287 18311 18521 18539 18911 18917 19079 19139 19181 19211 19379 19421 19427 19469 19541 19697 19751 19841 19889 19961 19991 20021 20147 20231 20357 20441 20477 20507 20549 20639 20717 20747 20771 20807 20897 20981 21011 21017 21059 21191 21317 21377 21491 21521 21557 21587 21599 21611 21647 21737 21839 22037 22091 22109 22157 22271 22277 22367 22481 22541 22571 22619 22637 22697 22739 22859 22961 23027 23039 23057 23201 23291 23369 23537 23561 23627 23669 23687 23741 23831 23909 24107 24179 24371 24419 24917 24977 25031 25169 25301 25307 25409 25469 25577 25601 25799 25847 25931 25997 26111 26249 26261 26681 26699 26711 26729 26861 26879 26891 26951 27059 27107 27239 27281 27407 27479 27527 27539 27581 27689 27737 27749 27791 27917 27941 28097 28109 28181 28277 28307 28349 28409 28547 28571 28619 28661 28751 29021 29129 29207 29387 29399 29567 29669 29759 29879 30011 30089 30137 30269 30389 30467 30491 30557 30839 30851 30869 31079 31121 31151 31181 31247 31319 31391 31511 31541 31721 31727 31769 31847 32027 32057 32117 32141 32189 32297 32321 32369 32411 32441 32531 32561 32609 32717 32801 32831 32909 32939 32969 33071 33149 33179 33287 33329 33347 33587 33599 33617 33749 33767 33809 33827 34031 34127 34157 34211 34259 34301 34367 34469 34499 34511 34589 34649 34757 34841 34847 34961 35051 35081 35279 35447 35507 35531 35591 35729 35801 35837 35897 36011 36107 36341 36467 36527 36779 36791 36899 36929 37019 37199 37307 37337 37361 37547 37571 37589 37691 37781 37811 37991 38237 38327 38447 38459 38567 38609 38651 38669 38711 38747 38921 39041 39161 39227 39239 39341 39371 39509 39827 39839 40037 40127 40151 40427 40529 40637 40697 40847 41141 41177 41201 41231 41387 41411 41519 41609 41759 41849 41957 41981 42017 42071 42179 42221 42281 42407 42461 42569 42641 42701 42839 42899 43049 43319 43397 43541 43577 43607 43649 43781 43787 43889 43961 44027 44087 44129 44201 44267 44279 44381 44531 44621 44699 44771 45119 45137 45179 45317 45341 45587 45821 46049 46091 46181 46271 46307 46349 46439 46589 46679 46769 46817 46829 47057 47147 47351 47387 47417 47657 47699 47711 47741 47777 47807 48119 48311 48407 48479 48539 48647 48677 48731 48779 48821 48857 48869 48989 49031 49121 49169 49199 49277 49331 49367 49391 49409 49529 49547 49667 49739 49787 49919 49937 49991 50021 50051 50129 50261 50459 50549 50591 50891 50969 51059 51131 51197 51239 51341 51347 51419 51437 51479 51719 51767 51827 51869 51971 52067 52181 52289 52361 52541 52709 52859 52901 53087 53147 53171 53231 53267 53279 53549 53591 53609 53717 53897 54011 54401 54419 54497 54539 54581 54629 54917 55049 55217 55331 55337 55439 55619 55631 55661 55817 55901 55931 56039 56099 56207 56237 56267 56477 56501 56531 56597 56711 56807 56891 56909 56921 57191 57221 57269 57329 57347 57527 57557 57791 57899 58109 58151 58169 58229 58367 58391 58439 58451 58601 58787 58907 59009 59021 59051 59207 59219 59357 59417 59441 59471 59627 59669 60089 60101 60167 60257 60647 60659 60761 60887 60899 60917 61151 61331 61379 61469 61559 61979 62129 62141 62189 62297 62927 62969 62981 62987 63029 63197 63311 63389 63419 63587 63599 63647 63689 63839 64151 64187 64301 64451 64577 64661 64781 64877 64919 65027 65099 65171 65267 65447 65519 65537 65579 65699 65717 65729 65837 65927 65981 66107 66359 66569 66749 66851 66947 67139 67187 67211 67217 67271 67409 67427 67577 67757 67931 68111 68207 68279 68447 68489 68711 68819 68879 68897 69029 69149 69191 69257 69401 69491 69497 69737 69761 69827 69857 69929 70001 70121 70139 70181 70199 70379 70457 70487 70571 70619 70841 70877 70919 70949 70979 70997 71261 71327 71339 71387 71411 71471 71549 71711 71807 71879 72089 72101 72167 72221 72227 72251 72269 72467 72647 72671 72869 73037 73061 73361 73607 73679 73847 74099 74159 74201 74381 74411 74507 74609 74717 74729 74759 75011 75167 75209 75389 75401 75539 75617 75707 75989 76001 76079 76157 76259 76367 76421 76541 76649 76829 76871 76961 77237 77261 77267 77417 77477 77489 77549 77687 77711 78137 78191 78437 78509 78539 78569 78779 78887 78977 79151 79229 79397 79559 79631 79691 79697 79811 79841 79901 79997 80147 80207 80231 80447 80471 80489 80627 80669 80681 80747 80777 80831 80909 81017 81041 81047 81197 81281 81371 81551 81647 81701 81899 81929 81971 82007 82037 82139 82217 82349 82469 82529 82559 82721 82727 82757 82811 82889 83219 83231 83267 83339 83399 83561 83639 83717 84059 84179 84221 84317 84347 84389 84521 84629 84809 84857 84869 84977 85091 85199 85331 85361 85427 85451 85619 85667 85817 85829 85931 86027 86111 86291 86351 86369 86531 86627 86927 87011 87119 87149 87179 87221 87251 87509 87539 87557 87587 87629 87641 87719 87959 88001 88259 88337 88469 88589 88607 88661 88799 88811 88817 89069 89519 89561 89597 89657 89669 89819 89897

TYPE II

500111 500177 500231 500237 500471 500807 500909 500921 501029 501131 501341 501701 501827 502079 502259 502499 502631 502769 502919 503231 503381 503549 503609 503621 503777 503819 503927 504149 504377 504521 504617 504797 504851 504989 505031 505049 505157 505277 505319 505367 505409 505511 505691 505709 506171 506327 506459 506531 506591 506687 506729 507077 507137 507149 507347 507359 507497 507779 507917 508019 508271 508577 508619 508901 509147 509687 509909 510047 510077 510401 510449 510551 510581 510611 510617 510707 510941 511109 511151 511169 511211 511631 511961 512009 512249 512579 512591 512711 512819 512927 512999 513101 513167 513311 513479 513509 513767 513839 514049 514079 514247 514529 514637 514649 514739 515087 515231 515369 515651 515771 516161 516251 516359 516431 516539 516587 516617 516947 516977 517079 517241 517457 517469 517499 517511 517547 517637 518057 518099 518129 518207 518237 518387 518429 518471 518741 518759 518801 518807 518981 519089 519119 519227 519371 519521 519551 519917 520019 520307 520361 520379 520409 520547 520607 520631 520967 521021 521039 521177 521357 521399 521537 521657 521669 521789 521879 522059 522227 522281 522371 522521 522659 522677 522761 522827 522881 522959 523349 523487 523541 523571 523637 523667 524201 524219 524351 524387 524411 524507 524519 524591 524681 524801 524939 524957 524969 524981 524999 525191 525359 525377 525431 525491 525869 525947 526049 526067 526157 526289 526499 526571 526649 526679 526739 526829 527069 527159 527207 527699 527981 528041 528401 528509 528629 528707 528821 528881 528971 529049 529127 529181 529271 529421 529517 529577 529691 529811 529979 530249 530531 530597 530711 530741 531101 531569 531611 531821 532331 532451 532529 532601 532619 532781 532949 533009 533051 533189 533261 533711 533969 534047 534629 534647 534659 534839 535349 535487 535571 535607 535859 535937 536057 536099 536147 536189 536279 536441 536447 536531 536561 536717 536771 536777 536801 536867 536999 537401 538049 538121 538157 538199 538247 538301 538331 538397 538511 538649 538709 538721 538799 539111 539267 539309 539321 539447 539501 539507 539639 539711 539837 539897 540119 540179 540269 540347 540389 540509 540539 540557 540611 540677 540689 540779 541361 541529 541547 541577 541991 542021 542081 542117 542261 542537 542921 543017 543161 543287 543311 543551 543659 543791 543857 543887 544007 544097 544277 544721 544757 544877 544961 545087 545141 545549 545747 545789 546017 546101 546149 546239 546617 547271 547361 547397 547499 547661 547817 548459 548501 548519 548831 549011 549089 549161 549167 549257 549509 549551 549587 549641 549737 549749 549977 550007 550061 550127 550211 550439 550469 550607 550661 550811 550841 550859 550937 551231 551651 551729 551909 552029 552089 552239 552401 552491 552581 552707 552749 552791 553097 553139 553277 553589 553757 553919 553961 554087 554207 554417 554639 554789 554837 554891 555041 555251 555419 555521 555827 556067 556271 556607 556691 556817 556859 557057 557369 557519 557729 557741 557759 557801 557861 558251 558287 558497 558539 558791 558827 559049 559211 559217 559367 559511 559547 559631 560081 560171 560237 560297 560477 560489 560501 560639 560891 560939 561059 561101 561551 562019 562271 562349 562517 562577 562589 562631 562691 563009 563039 563117 563357 563411 563417 563447 563501 564059 564227 564269 564299 564371 564407 564701 564917 565109 565259 565379 565391 565427 565517 565769 565889 565907 565919 566231 566429 566441 566537 566549 566717 567011 567179 567449 567527 567659 567881 567947 568151 568187 568439 569081 569159 569249 569267 569321 569417 569579 569711 569729 569771 570041 570047 570077 570107 570389 570419 570461 570497 570509 570527 570839 570851 570959 571199 571229 571397 571601 571799 571871 572051 572177 572321 572417 572519 572597 572651 572657 572879 572939 573107 573161 573341 573479 573509 573569 573737 573761 573899 574031 574157 574181 574307 574619 574799 574967 575129 575249 575369 575429 575579 575591 575921 575957 576029 576221 576377 576551 576647 576701 576881 577007 577067 577151 577331 577349 577397 577529 577637 577937 577979 578297 578309 578399 578687 578777 578819 578957 579197 579281 579407 579497 579539 579569 579611 579641 579881 579947 580031 580079 580301 580379 580631 580691 580757 580889 581069 581099 581171 581237 581261 581351 581549 581597 581699 581729 581981 582011 582137 582221 582317 582509 582689 582719 582761 582851 582971 583019 583169 583337 583619 583859 584279 584357 584471 584789 585041 585071 585269 585839 585881 585911 585917 586121 586361 586457 586499 586541 586601 586631 586811 586919 586979 587051 587267 587549 587621 587747 587771 587969 587987 588167 588239 588359 588569 588647 588947 589109 589187 589241 589289 589451 589529 589607 589751 589859

Edit Text of this page (last edited March 3, 2020 by c-98-223-158-4.hsd1.il.comcast.net)
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