Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 284: | \[{18^{284}-1\over17}\] | 52 × 13 × 19 × 569 × 2557 × 5113 × 27294590209<11> × 40658768837<11> × 171677613761<12> × 23821298356519<14> × 26048642634589<14> × 64847572636954189<17> × 1206599617106390561<19> × 26310357525674657574901<23> × 238282166345470862080681<24> × 25193731479774394872461773<26> × 8313279867213693856690162577<28> × 99988492874568924239703307744649<32> × 404888252726379587195529885794129<33> × 11360704486867123771415523819277051<35> × 72054519392485651380041802175129267780117537847117<50> |