Base 16 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 405: | \[{16^{405}-1\over15}\] | 34 × 5 × 7 × 11 × 13 × 19 × 31 × 37 × 41 × 61 × 73 × 109 × 151 × 163 × 181 × 271 × 331 × 541 × 631 × 811 × 1321 × 1621 × 2593 × 6481 × 9721 × 15121 × 23311 × 30241 × 49681 × 54001 × 71119 × 87211 × 135433 × 246241 × 262657 × 279073 × 348031 × 537841 × 3618757 × 6876901 × 18837001 × 29247661 × 74967931 × 97685839 × 106979941 × 168410989 × 272010961 × 1511474581 × 2437880491 × 2458695061 × 3934029061 × 4977454861<10> × 448217524891<12> × 9893662806061<13> × 10360573664851<14> × 49971617830801<14> × 165041853060421<15> × 385838642647891<15> × 1969543281137041<16> × 11096527935003481<17> × 166242935471754241<18> × 1583423452213582178911805893942695192421<40> × 4343952637722706853771280086533392805261<40> × 17645665556213400107370602081155737281406841<44> |