Base 20 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 630: | \[{20^{630}-1\over19}\] | 33 × 72 × 11 × 29 × 31 × 43 × 61 × 71 × 127 × 181 × 211 × 251 × 307 × 421 × 491 × 541 × 631 × 701 × 827 × 911 × 1051 × 1621 × 3001 × 6301 × 6679 × 10529 × 17921 × 23311 × 32719 × 36541 × 53101 × 54541 × 69481 × 82531 × 152381 × 164011 × 242551 × 261451 × 460951 × 747811 × 2750161 × 2890441 × 3551941 × 7003781 × 31585261 × 36363727 × 64008001 × 66804571 × 4159879921 × 8442733531<10> × 26876632021<11> × 79083953101<11> × 143677768081<12> × 4443547135861<13> × 13295107990361<14> × 3994611390415801<16> × 6921878367584041<16> × 338649469410070561<18> × 1938171611440030321<19> × 1049775211713211189291<22> × 195788318726539864602271<24> × 3906065208960593349095881<25> × 8119934685531950847364467271<28> × 27455958930629469508499288821<29> × 20613778771413055964423150179108981<35> × 10904737244627142315491733742816127002801<41> × 39196075874227181699083597662234630373081<41> × 10287600958458182504983419994609358363826919<44> × 68728066670457765494784262143995903488000008001<47> × [54048178936606227017930499390411169220568964805987134021807995643187703428744012813224743126131991930876475811195729918553282290628782151640321021084741<152>] |