Base 4 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 450: | \[{4^{450}-1\over3}\] | 32 × 53 × 7 × 11 × 13 × 19 × 31 × 37 × 41 × 61 × 73 × 101 × 109 × 151 × 181 × 251 × 331 × 601 × 631 × 1201 × 1321 × 1801 × 4051 × 8101 × 23311 × 54001 × 63901 × 100801 × 115201 × 268501 × 617401 × 695701 × 10567201 × 13334701 × 18837001 × 29247661 × 1182468601 × 1348206751 × 4714696801<10> × 1133836730401<13> × 307116398490301<15> × 413150254353901<15> × 6269989892198401<16> × 13861369826299351<17> × 3192261504216112476901<22> × 281941472953710177758647201<27> |