Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 246: | \[{31^{246}-1\over30}\] | 25 × 3 × 72 × 19 × 83 × 331 × 1498141 × 3278946967399<13> × 7066933486329661873<19> × 42481797154433176612759<23> × 132259604354473376342663326676479453<36> × 61865491146216383674809135780235913078137<41> × 64117240215031506184829311788521421030213799388059556511511099095343630026448184243942433855922636940077399<107> × 131570024720631652108242182219574204219293090070137262019264567691804717046030582652460243523043658514798724836661<114> |