Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 455: | \[{5^{455}-1\over4}\] | 11 × 71 × 131 × 211 × 631 × 911 × 4201 × 19531 × 4914911 × 6481021 × 85280581 × 305175781 × 1034150930241911<16> × 20986207825565581<17> × 9680647790568589086355559<25> × 17499733663152976533452519<26> × 252009190957922611927192988424665484581951479831<48> × 77662614195306163718052484475206927451931220678764031<53> × 4424058458716240622127494493285876842698352004556992224619198917301791087438480742781<85> |