Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 492: | \[{31^{492}-1\over30}\] | 26 × 3 × 72 × 13 × 19 × 37 × 83 × 331 × 6397 × 30341 × 119557 × 922561 × 1498141 × 407552137 × 491834689 × 3278946967399<13> × 2887427517866976061<19> × 7066933486329661873<19> × 42481797154433176612759<23> × 132259604354473376342663326676479453<36> × 61865491146216383674809135780235913078137<41> × 2322431112061021980104675872457081867878689361482939558747291940389392277191963579218883420952401<97> × 64117240215031506184829311788521421030213799388059556511511099095343630026448184243942433855922636940077399<107> × 131570024720631652108242182219574204219293090070137262019264567691804717046030582652460243523043658514798724836661<114> × [270875051468481576234707304434850812946552695653164383278603861566317895910215053110235573055944461992186180652147785229682524103397534296286297412115859564774349751758398843085487609642944958884894329430363604233<213>] |