Base 10 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 261: | \[{10^{261}-1\over9}\] | 32 × 37 × 523 × 3191 × 4003 × 16763 × 43037 × 62003 × 72559 × 333667 × 670249 × 44974999 × 9113995243<10> × 77843839397<11> × 7299238406959<13> × 9136734149894295938064503769037<31> × 131108694538423601496731528051392288744803439<45> × 310170251658029759045157793237339498342763245483<48> × 795147384607512419909180910115029853603685148570876907<54> |