Base 29 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 140: | \[{29^{140}-1\over28}\] | 22 × 3 × 52 × 7 × 11 × 31 × 71 × 281 × 401 × 421 × 1061 × 141961 × 732541 × 88009573 × 427822081 × 470925821 × 574995877 × 826031641 × 181767795581<12> × 14222677166671<14> × 17860058418250021<17> × 59696006212089310421<20> × 119693978630517277001<21> × 262829868618114207341186664444332611540637900298461<51> |