Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 391: | \[{15^{391}-1\over14}\] | 829 × 31741 × 1129991 × 5040773 × 1045002649 × 6734509609<10> × 304490424503597<15> × 3046462151831565769<19> × [518817001881220583325840464973602119739907455241659684014419680565886377123597968135661635358729918582616176363682092482878109628322556070476474417496069140704634891298442839301548840734227716773552379673125266535772539314849201253517676815966780117584978078988710408660975303081990093308268620425886588835389981268607213200753507463221521592899283160755039050564270115036789282296122391<387>] |