Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 353: | \[{5^{353}-1\over4}\] | 235099 × 5451190499<10> × 205504553260781<15> × 34785215885504832719<20> × 8597971138069346350487920233892950696823018756984661<52> × 17298054593398059275963542103761784536566890115237305110612448161311883797094887281439350193094486991086638512149316831848046668360439664147709039<146> |