Base 4 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 315: | \[{4^{315}-1\over3}\] | 32 × 72 × 11 × 19 × 31 × 43 × 71 × 73 × 127 × 151 × 211 × 281 × 331 × 337 × 631 × 5419 × 23311 × 29191 × 86171 × 92737 × 106681 × 122921 × 152041 × 649657 × 664441 × 870031 × 983431 × 1564921 × 1765891 × 18837001 × 77158673929<11> × 29728307155963706810228435378401<32> × 11247702599676505481447137991664348691<38> |