Base 22 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
* 555: | \[{22^{555}-1\over21}\] | 3 × 132 × 61 × 3331 × 12211 × 245411 × 310727 × 92050451 × 404116591 × 858794191 × 1084328143 × 360437561641<12> × 1886989139768881<16> × 6321947535896801491<19> × 310496548763781474766081<24> × 688883882586966742909561<24> × 3795521911775341204317584693<28> × 35781628429886658331140591695821<32> × 357596132379929705046647010760657<33> × 917927528110948210581359272999181<33> × 26010343399517750831748751385992021<35> × 37066259406434991424746201562070047598821<41> × 961009117187703018145575529767322672094341<42> × [4180335691251785825044042156594594897461944877317210893364484149183813487171859299341332404421989198301013201549580184294252546116035460222264282013269694773523650352776395985290535857640156718930777847551631169828720483871790507816964192772486087313443242390871125473447077857183255617476092535505535075721726354183724257739863325070749803542689185231<352>] |