Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 204: | \[{18^{204}-1\over17}\] | 52 × 73 × 13 × 17 × 19 × 103 × 137 × 229 × 307 × 409 × 443 × 457 × 1429 × 6257 × 133417 × 20786377 × 1292838509 × 28281862627<11> × 1895634885375961<16> × 2842438795870273<16> × 10413571416962911<17> × 61187167524277573<17> × 7563707819165039903<19> × 12987756239101305138847<23> × 17947966945702190647093<23> × 4124844857754113069438689<25> × 10455600321977665235137079960588286574201<41> |