Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 275: | \[{28^{275}-1\over27}\] | 15101 × 106801 × 637421 × 6077039 × 50545507 × 6813064001<10> × 7984305701<10> × 16071033331<11> × 66344748251<11> × 170176961351<12> × 829366011211<12> × 94275090945167441<17> × 218642118741565201<18> × 5906633396655970661<19> × 69306675737281627293003851<26> × [157902873091370034907480349275721218835912996817203076074882329356597645720467546971282395307472803819898581827826137373915584484929606404022790966403293200315306135408502685721754309344397642939538860974795243166855881861551<225>] |