Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 230: | \[{31^{230}-1\over30}\] | 25 × 5 × 11 × 41 × 47 × 691 × 17351 × 21821 × 96601 × 114311 × 195271 × 1509997 × 61562537 × 109284961 × 176542021 × 524818601 × 45414448613<11> × 7176374761323733117<19> × 24049043219391687361<20> × 293006379555093281221<21> × 45790319981281086561307344188678263806067171139001234505229415023817573183092317790531<86> × 1814392827075469009286547723958497289007356519948646784210029597394244012245475287978655917791234899524643597615301<115> |