Base 16 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 87: | \[{16^{87}-1\over15}\] | 3 × 7 × 13 × 59 × 233 × 349 × 1103 × 2089 × 4177 × 29581 × 3033169 × 107367629 × 536903681 × 27920807689<11> × 9857737155463<13> × 22170214192500421<17> × 96076791871613611<17> |