Base 10 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 220: | \[{10^{220}-1\over9}\] | 112 × 23 × 41 × 89 × 101 × 271 × 331 × 661 × 1321 × 3541 × 4093 × 5171 × 8779 × 9091 × 18041 × 21649 × 27961 × 62921 × 148721 × 513239 × 83251631 × 1052788969 × 1056689261 × 1121407321 × 20163494891<11> × 318727841165674579776721<24> × 1300635692678058358830121<25> × 1395900370916327245555441901<28> × 36380545029953205956377406702261<32> |