4241 and 4243 form a twin prime pair.

They are of the form

where consists of digits.

>> Are there more such twin primes of 4 digits each?

>> Do there exist other twin primes of that type consisting of 6 and 8 digits?

### Like this:

Like Loading...

*Related*

## About benvitalis

math grad - Interest: Number theory

There is one more twin prime pair of 4 digits.

And eighteen combinations of 6 digits, and forty-four combinations of 8 digits, among them also 42424242 ± 1

42 4243 4241

78 7879 7877

102 102103 102101

108 108109 108107

180 180181 180179

192 192193 192191

270 270271 270269

300 300301 300299

312 312313 312311

330 330331 330329

342 342343 342341

390 390391 390389

420 420421 420419

522 522523 522521

540 540541 540539

612 612613 612611

660 660661 660659

822 822823 822821

840 840841 840839

882 882883 882881

1002 10021003 10021001

1140 11401141 11401139

1230 12301231 12301229

1272 12721273 12721271

1482 14821483 14821481

1542 15421543 15421541

1632 16321633 16321631

1770 17701771 17701769

2100 21002101 21002099

2190 21902191 21902189

2682 26822683 26822681

2742 27422743 27422741

3072 30723073 30723071

3198 31983199 31983197

3408 34083409 34083407

3642 36423643 36423641

3828 38283829 38283827

4242 42424243 42424241

4452 44524453 44524451

4572 45724573 45724571

4740 47404741 47404739

4788 47884789 47884787

4998 49984999 49984997

5622 56225623 56225621

5718 57185719 57185717

5832 58325833 58325831

6102 61026103 61026101

6258 62586259 62586257

7428 74287429 74287427

7740 77407741 77407739

7938 79387939 79387937

8370 83708371 83708369

8472 84728473 84728471

8610 86108611 86108609

8790 87908791 87908789

8820 88208821 88208819

8832 88328833 88328831

8988 89888989 89888987

9072 90729073 90729071

9120 91209121 91209119

9192 91929193 91929191

9210 92109211 92109209

9330 93309331 93309329

9702 97029703 97029701

pipo

Very nice