Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 234: | \[{18^{234}-1\over17}\] | 73 × 19 × 73 × 79 × 131 × 307 × 521 × 937 × 991 × 2081 × 6553 × 27847 × 34327 × 465841 × 4020180841 × 7424759473<10> × 29759719289<11> × 786564396307<12> × 454154940405739<15> × 1993017556871641<16> × 170258429679493134487<21> × 7035278398590069608527<22> × 1412364383703504438982118048251<31> × 999528789074985233712133564470395480495929<42> × 6710525042135192981329116141673131618207434948646727670289592537<64> |