Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
241: | \[{7^{241}-1\over6}\] | 1447 × 28439 × 33486078253526557<17> × 580351872045743557<18> × 547283138069536869412948975377385222182769003<45> × 2937026550451562627666151150279078330125909163812627<52> × 60453009092135246248533286448209615125383370497353512794300358913<65> |