Base 10 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 208: | \[{10^{208}-1\over9}\] | 11 × 17 × 53 × 73 × 79 × 101 × 137 × 521 × 859 × 1249 × 49297 × 300977 × 648961 × 1580801 × 5882353 × 265371653 × 1058313049 × 249227787818677482257<21> × 1900381976777332243781<22> × 632527440202150745090622412245443923049201<42> × 333632766438409011274705987026407639670042305536743429073<57> |