Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 615: | \[{8^{615}-1\over7}\] | 31 × 73 × 151 × 631 × 1231 × 13367 × 23311 × 49201 × 2940521 × 3887047 × 164511353 × 70171342151<11> × 6376386802464073<16> × 92757531554705041<17> × 177722253954175633<18> × 3427007094604641668368081<25> × 3655725065508797181674078959681<31> × 23951678060339961196909092199831<32> × 188089893911024068187126343999359519615500901401<48> × 242930150369581725249341464475421249205592384370695685937<57> × [464076443434102562104187713470498926385355958019470651662554032045925431781155252218798402944459223454791276164899453483710952834460615965791707570661146625659758049893539758405336575688017700740396274647285092270634940566109671928520286544287306093991824671<258>] |