Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 642: | \[{13^{642}-1\over12}\] | 2 × 3 × 7 × 61 × 157 × 643 × 2141 × 176551 × 374929 × 677311 × 6053633 × 112778857 × 39174984451<11> × 80497549423<11> × 116077045829<12> × 791958624719<12> × 3286126349184953<16> × 19968513360169668964438813128424526105976814973239628283106722206580247180654148334428039<89> × 1842708018885404721657218228344276394838382971121554990878798778219059086476647798269311913985066291<100> × [635794791016625836614348121344316860286606499025239504626130781117741243940987033597172758910641597488670754126081944743064930373522374823691298166167280873562337085178709539230894459862241245400298791<201>] × [3127876388125804526333265839211748398346913444430112391785110348881336212945912272031289656605110784452040222493872376626458246030132244469230030417215332760761246583720831668329172096356328293637110580502203260679153770193<223>] |