Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 160: | \[{31^{160}-1\over30}\] | 29 × 5 × 11 × 13 × 17 × 37 × 41 × 181 × 409 × 1129 × 1889 × 17351 × 21821 × 380641 × 1176641 × 1347329 × 6139297 × 23277313 × 4707206941<10> × 8084410241<10> × 25085030513<11> × 136046551681<12> × 727422334085254365392641<24> × 12229161229828123152356790761257921<35> × 3889436310686727916228493162492361601<37> × 6323300892946843107153647636721862857121<40> |