Base 4 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 463: | \[{4^{463}-1\over3}\] | 11113 × 3407681 × 448747600991881<15> × 2356759188941953<16> × 76834966209858049526107<23> × 239932071009857681156251129<27> × 385606580062688087218266143<27> × 88119307925269041107418404833666787<35> × 15148264043785111348665069495360623752616947973471649653354617<62> × 497532604551403800659718805165333685595913106186792454026995210139<66> |