Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 234: | \[{15^{234}-1\over14}\] | 24 × 19 × 53 × 79 × 211 × 241 × 541 × 739 × 811 × 1249 × 2341 × 20749 × 21061 × 157483 × 2854567 × 4640221 × 5050891 × 5557501 × 16655159 × 77506651 × 1539711288259<13> × 1705084698799<13> × 87583208064301<14> × 606451512892729597861<21> × 3230061048592350229141<22> × 3022689049104598084874946135455929<34> × 119115855554252461371000291571475371867<39> × 34867766180449197831495746208537550785079<41> |