Base 4 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 350: | \[{4^{350}-1\over3}\] | 53 × 11 × 29 × 31 × 41 × 43 × 71 × 101 × 113 × 127 × 251 × 281 × 601 × 701 × 1051 × 1801 × 4051 × 8101 × 39551 × 86171 × 110251 × 122921 × 268501 × 7416361 × 47392381 × 60816001 × 347833278451<12> × 34010032331525251<17> × 535347624791488552837151<24> × 2430065924693517198550322751963101<34> × 1038213793447841940908293355871461401<37> |