Base 4 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 395: | \[{4^{395}-1\over3}\] | 11 × 31 × 2687 × 5531 × 12641 × 1415681 × 202029703 × 5435488351<10> × 16203007441<11> × 1113491139767<13> × 201487636602438195784363<24> × 3868132159624916546905272573063237265865977199403213448652782202624081<70> × 1549947124742313956602636352657736025245229660818980496353711669466396289933045071001<85> |