Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 151: | \[{31^{151}-1\over30}\] | 160967 × 4571726737<10> × 33431071634797<14> × 16807320721215137164439<23> × 902502388917514064271121799<27> × 493149751025291092907198655658081543<36> × 284185186849889952594856632648571931862124637524620273556979130456692226222665762940158597169892770036061371749<111> |