Base 25 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 405: | \[{25^{405}-1\over24}\] | 34 × 7 × 11 × 19 × 31 × 61 × 71 × 109 × 163 × 181 × 271 × 487 × 521 × 541 × 811 × 829 × 1171 × 1621 × 1741 × 1783 × 4159 × 4861 × 5023 × 5167 × 6481 × 7621 × 11071 × 31051 × 164701 × 169831 × 16018507 × 297315901 × 921737881 × 31472682400981<14> × 182517282870121<15> × 359683606111861<15> × 2332368714077641<16> × 60081451169922001<17> × 223823944168266601<18> × 1312315694449748688331<22> × 26941244373060650224561<23> × 279151346689444799703543961<27> × 2066067271380136212224701233463<31> × 4732858648953373926861365363761501<34> × 11419697846380955982026777206637491<35> × 27958214476418447045648661835559283181<38> × 392380251491428839184362869324894224798565499317754604411<57> × 944258408137585813686274318096745451193284210327185749808249978686500799118335443897718426923221761<99> |