Base 10 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 207: | \[{10^{207}-1\over9}\] | 32 × 37 × 277 × 333667 × 109908191603107<15> × 203864078068831<15> × 11111111111111111111111<23> × 1595352086329224644348978893<28> × 823799348530495507269035013254489287846904557<45> × 11033517351146841676953477818524172302174982813132058195800613488154982399<74> |