Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 284: | \[{15^{284}-1\over14}\] | 25 × 113 × 853 × 91733 × 5957753 × 25385909 × 5852594044699<13> × 922195312138651<15> × 6713182133980505226300443<25> × 14292190347261534654818189<26> × 548604883121902124817433729373<30> × 272301574062887284439621057578687<33> × 152648701624697715072344529259283770507<39> × 47834848413205889118328124427617521437720735396457682724473<59> × 30231897260672554217296260750207246911654785082592838493622571393107029<71> |