Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 192: | \[{31^{192}-1\over30}\] | 210 × 3 × 72 × 13 × 17 × 19 × 37 × 97 × 193 × 331 × 409 × 1129 × 1889 × 3457 × 4801 × 7393 × 25537 × 922561 × 1347329 × 4067137 × 6139297 × 23277313 × 8874745729<10> × 25085030513<11> × 852890113921<12> × 27333034608226177<17> × 7499207440683838894753<22> × 13567765732542221348764897<26> × 32191879548814246012327699627696897<35> × 2729531399980365467623685793868286209<37> × 55107727353928381036964167246494350909954881<44> |