Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 210: | \[{28^{210}-1\over27}\] | 3 × 11 × 29 × 31 × 43 × 71 × 113 × 211 × 271 × 421 × 631 × 757 × 1051 × 2269 × 2521 × 4621 × 13007 × 15991 × 29443 × 35771 × 53951 × 59221 × 132679 × 206501 × 637421 × 734941 × 4422461 × 6313861 × 52000411 × 84673681 × 14961516151<11> × 31384274881<11> × 317689739221<12> × 105632155735261<15> × 2005875869991701<16> × 223934956756993189<18> × 102324803053934305339531<24> × 99885743242098024883367081<26> × 98336245890572745925217555761<29> × 11536371289790796513662140395301<32> |