Base 16 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 399: | \[{16^{399}-1\over15}\] | 3 × 72 × 13 × 29 × 43 × 113 × 127 × 229 × 337 × 457 × 571 × 1429 × 1597 × 2129 × 4523 × 5419 × 14449 × 25537 × 32377 × 63841 × 73417 × 83791 × 131101 × 160969 × 174763 × 186733 × 524287 × 525313 × 568177 × 1212847 × 12828649 × 160465489 × 104038692997<12> × 275415303169<12> × 126848469231149<15> × 679253585011429<15> × 84350684843543413<17> × 185155691294150619421<21> × 3713714829105113122459933<25> × 11355690325205671380495907537<29> × 106788290443848295284382097033<30> × 449329386292232535250647435097<30> × 109801296198740392094858844294643<33> × 163537220852725398851434325720959<33> × 42965845405183475755389522097684729<35> × 29724614739876344125010817433703775877960388838436140673<56> |