Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 406: | \[{28^{406}-1\over27}\] | 292 × 59 × 113 × 2437 × 13007 × 25579 × 35771 × 40427 × 1074509 × 4422461 × 1028236819 × 71929399249<11> × 35318543060221<14> × 4746008971253789<16> × 628445942416927867<18> × 5380105336587550157<19> × 567775273554106876726312853<27> × 25404189355843522469778697943<29> × 582595509837473004489665028935473297399<39> × 196099183803801090876275854183872382603608256733899<51> × 24652673878525931868482411715847429903604657995791833<53> × 11915687023809641696241735699168370892017993618836401178877<59> × [20548500513384842476915467571692540323553738405171963755488893349088993862893604842587692794309498349613390509807411563280447158956016974511408907265696057383569040258242965593436347871404979054670154369001<206>] |