Base 4 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
451: | \[{4^{451}-1\over3}\] | 23 × 83 × 89 × 683 × 13367 × 18041 × 20747 × 216481 × 21737299 × 164511353 × 8831418697<10> × 2168435713049<13> × 9718704501529<13> × 538939720215834697<18> × 63146810207339718162566404988206179064461273050603002917638397126970137660970487<80> × 3958859429037736877470306072068655902413162916380964479057367144710444905514865617548944617905483<97> |