Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 251: | \[{31^{251}-1\over30}\] | 27611 × 1595357 × 9510154061<10> × 8638168688383156613<19> × 20620758304317955217273951<26> × [95898102570447974903595596683683750839736611808768402520481300702137425693099737330926820965229753856264053998164636636762198198271883735222970344704233048781554744445355822063188077170437034528760824255694932019957622719804076444542294615369711917038096736494833052644582561826569732422217735743323553388241<308>] |