Base 17 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 249: | \[{17^{249}-1\over16}\] | 307 × 10957 × 186917 × 4461996709502491<16> × 1441585450365875501<19> × 859764623611313847689900219<27> × 25093663984219519540032068784098902657<38> × 361636059093059401270170190932275191488900255093209<51> × 4770870054239440000203102631444570450315500209206597423037963308359906867025808655901293882459452508348966407218178420899089984038143404101388991<145> |