Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 320: | \[{31^{320}-1\over30}\] | 210 × 5 × 11 × 13 × 17 × 37 × 41 × 181 × 409 × 1129 × 1889 × 4801 × 17351 × 21821 × 259201 × 380641 × 1176641 × 1347329 × 6139297 × 23277313 × 59826881 × 4707206941<10> × 8084410241<10> × 25085030513<11> × 136046551681<12> × 177285860161<12> × 727422334085254365392641<24> × 12229161229828123152356790761257921<35> × 3889436310686727916228493162492361601<37> × 6323300892946843107153647636721862857121<40> × 55107727353928381036964167246494350909954881<44> × 28516070333590986925843256859248132009339805441626336801547463234135726971958396888616630785641125796335030680228198851157395469062471669281593130172550988885623530881<167> |