Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 258: | \[{15^{258}-1\over14}\] | 24 × 173 × 211 × 241 × 1549 × 39205337 × 5519984993<10> × 27411764701<11> × 16112471507273<14> × 38664536016220999<17> × 1873636936649383249<19> × 2431224260269392169<19> × 3109274247465857390281<22> × 26656068987980386414408582952871386493955339704241<50> × 5285893004968632160355212829084648823867469773792061<52> × 119983296159419386406934525940047822661513129865720754215156469557046614269<75> |