Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 720: | \[{7^{720}-1\over6}\] | 26 × 32 × 53 × 11 × 13 × 17 × 19 × 31 × 37 × 41 × 43 × 61 × 73 × 181 × 191 × 193 × 241 × 281 × 409 × 541 × 881 × 1063 × 1201 × 2801 × 4021 × 9901 × 42409 × 117307 × 129169 × 137089 × 154351 × 159871 × 169553 × 295831 × 542081 × 6568801 × 7777981 × 12913561 × 25726609 × 51385969 × 635311009 × 1527007411 × 13841169553<11> × 32952799801<11> × 125096112091<12> × 338325042961<12> × 555915824341<12> × 810221830361<12> × 33232924804801<14> × 1795168434777002101<19> × 2065025164427492401<19> × 2312581841562813841<19> × 5789644155060072001<19> × 85560261859655897641<20> × 93273670767719119849201<23> × 874189773856249734968757238372561<33> × 754316136806426696131406878764131048161<39> × 5427341608216138813862360726091528531034677402251589898081<58> × 14442845740963716567712029558860960031249775294758292179601<59> × 443285092483181962870367978362044529724539213777581129415343252161<66> |