Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 315: | \[{28^{315}-1\over27}\] | 32 × 192 × 31 × 113 × 271 × 421 × 1009 × 2521 × 15121 × 15991 × 36541 × 206501 × 444979 × 637421 × 734941 × 4422461 × 6313861 × 48403441 × 2527757821 × 223934956756993189<18> × 154154940307497300453157<24> × 80504606285644335564853693<26> × 99885743242098024883367081<26> × 1114029602365666612314868561<28> × 98336245890572745925217555761<29> × 11536371289790796513662140395301<32> × 81321641205649259712046817120466841<35> × [216507905277839118026494559797090928778896617968743493011754386313492229565616658887907441790345508431197264836430850432198736058443845960122302116187991441<156>] |