Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 615: | \[{5^{615}-1\over4}\] | 11 × 31 × 71 × 181 × 739 × 1231 × 1741 × 15991 × 62731 × 248461 × 960139 × 1785961 × 2238236249 × 2908888501 × 9025583299<10> × 18383372131<11> × 1256950067521<13> × 5079304643216687969<19> × 226073665516341068071<21> × 1788582600145862687626441<25> × 5832474690386022428273180864659<31> × 9353066485119999732284835819085027408231<40> × 29126077906797054524253118878873401242767428008603378081<56> × 37919826875664986235304593357135782563764944103198408929158877056942771<71> × 3688994493382770767166238924932661537900185376123871884990455806864172425851<76> |