tables > repunit > 31

Base 31 Repunits

Table

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Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>

512: \[{31^{512}-1\over30}\] 213 × 13 × 17 × 37 × 257 × 409 × 641 × 1129 × 1889 × 2689 × 4801 × 9601 × 1347329 × 6139297 × 23277313 × 13768516609<11> × 23583164929<11> × 25085030513<11> × 99578469377<11> × 17777097601059636481<20> × 7231746495781123585793<22> × 18596395822328738537384956455041<32> × 55107727353928381036964167246494350909954881<44> × 7181521717145072083078608601358856159842333085909766829569<58> × 5458211209324642135249550253224148794889111129419255989605589331922794959797224465231260811292780584276002656949913825204520887812609<133> × 1308567383703503063658923853737717349291586143121103051525759814849845997699873626585684368182322040932718186629319521813904124746661375734092893275832354466557566354144286217822183085784429751768960315847536879902123632440863196120392397765103788657978574666853429591811318230134978979770864243682470669177717192918888751817080018727522502684333158944131877377<361>

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