Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 306: | \[{28^{306}-1\over27}\] | 32 × 192 × 29 × 37 × 103 × 127 × 239 × 271 × 307 × 613 × 757 × 2347 × 8807 × 57427 × 102547 × 444979 × 45508138747<11> × 146081770543<12> × 14355190742383<14> × 8061059901399457<16> × 366725909655733758769<21> × 148020807352107352204781<24> × 412037760199357579738273<24> × 1707336094899200333664552684944445714046121929<46> × 21099744001697087505351553822406156421454436701<47> × 43989824843071700647170257890026209782005238360922199184470570136204243<71> × 4032606081786211570129554054546518379188476758663648721482221514902884680161458731097379585159994337764012309837409<115> |