Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 170: | \[{5^{170}-1\over4}\] | 2 × 3 × 11 × 71 × 409 × 521 × 1531 × 3061 × 41540861 × 75752681 × 247515241 × 466344409 × 504156421 × 34563155350221618511<20> × 68795069664507129341<20> × 8198241112969626815581<22> |