Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 299: | \[{31^{299}-1\over30}\] | 42407 × 1509997 × 2426789 × 7908811 × 61562537 × 7176374761323733117<19> × [5072788237164311096005305679696646617444281670293572364918798053665419502451331033452356070786685234458679543402742249632766442135005691864313500740510285918023189335230569121818735728324444789326919528668575577704115964289455010782472934845817988751557853720092296738597801801828359839166494865418573476188376662688243697945163997940874459112282920200498024920366077262544657936932247328933761<394>] |