Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 323: | \[{15^{323}-1\over14}\] | 52973 × 4272113 × 5111153 × 1045002649 × 6734509609<10> × 370649274902657<15> × 1935318285290824757<19> × [922557692172144193341743683654578400591606429374330765970723799053576139408429933947139870118892065540028647568011718681469462433025936205393263712445307360326211417428652317820306194357617062857268864628337919766000767859965607141565604374687175906444010644167741262446645996203950680315785402391385933676417<309>] |