Base 10 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
131: | \[{10^{131}-1\over9}\] | 80173 × 109517 × 141811693 × 446790173 × 7370364319027<13> × 15594845538029429933<20> × 7317723970031057677693<22> × 131758351065116151205213<24> × 180222062287834025451247081<27> |