Base 3 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 408: | \[{3^{408}-1\over2}\] | 24 × 5 × 7 × 13 × 41 × 73 × 103 × 137 × 307 × 409 × 613 × 1021 × 1871 × 6481 × 12853 × 30091 × 34511 × 956353 × 49637281 × 129159847 × 1743831169 × 99810171997<11> × 6458150122561<13> × 3833564416504313<16> × 187668407555352123529<21> × 53958784909638588059956801<26> × 221200680720606092053543425481471681<36> |