Base 4 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 569: | \[{4^{569}-1\over3}\] | 10243 × 15854617 × 55470673 × 223439473 × 2058017388830521<16> × 182602768015690099110572536951<30> × 110582329556343704552404016904356632250881<42> × 820793700834095033598534000634605722059739038841<48> × 108806602929626417274819133540757472113515266666479405303620102624927964940643869698641<87> × 166600443145782167422869582205773627533809608354200608495919325006516227014769666125340269708249<96> |