Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 649: | \[{8^{649}-1\over7}\] | 23 × 89 × 19471 × 179951 × 184081 × 599479 × 649001 × 1031911 × 29084287 × 345631441 × 23952086159<11> × 27989941729<11> × 3203431780337<13> × 9213624084535989031<19> × 34418203155300430111979265857<29> × 3700008265010484376181140059002735164665618094577260273009727474953442430219036282100642597609582698411614761090487936159280023273<130> × [135618440798256472067194559755323390847134125812225206908501827657172346095525906029578526178320523895136697328227460843472630110326220429205481586844135501845313389413216717125806301827075648863468488668832091983415208020540733138556596781342145822730066129372235678806958574148347405819195463186847018555154577913845258913<324>] |