Base 10 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
205: | \[{10^{205}-1\over9}\] | 412 × 83 × 271 × 1231 × 275521 × 538987 × 21158848681<11> × 201763709900322803748657942361<30> × 37654445534598090531061637404570516695225922222356909916889395661871779838862063550827086195341481919418156260385301045484576632937146377914151<143> |