Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 656: | \[{13^{656}-1\over12}\] | 24 × 5 × 7 × 17 × 83 × 14281 × 524801 × 638453 × 3587009 × 407865361 × 1089083758501<13> × 1508425553233<13> × 2037429718817<13> × 6740847065723<13> × 140299545168523469<18> × 45111380897407574171<20> × 4360074065613288879592193<25> × 58047259977349384372529747126587<32> × 977325013427400988608262834933322005324559459650855417<54> × 78944304950986885361678320272399578587303511161274454982040908477<65> × 17413342788377496693166262758726843228079718355632642756580055487193342874638833756191502788282843203162992214026990160937353<125> × [17320846540012512807472066021178899191406555193398545825580989840765862172458502436327211363697088887744558483514476129892175845508480115859907834132102251952289083268474170336024805441306047602998694432298790717005474312473786953632036650650949373876634956831059970365863205579031885735437630056052885790369<308>] |