Base 4 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 853: | \[{4^{853}-1\over3}\] | 2465171 × 2065711807 × 7155452470451<13> × 513740645819473<15> × 14343826193517763<17> × 4727997228805279065233<22> × 18449450106982911477871034430148217716695646282266064204205488745738888010789289<80> × 35382013370709363956405022720063581613953920882540914664616009343887731347839468592930021200199529033<101> × 2236316864019158840735959359498635477634259430025869474767592038357190540362426624729661441180602192404592046105651917609<121> × 648801734928992181954492950048776053904043590857435580244330431351954368045897625283526231577834810740001303595136354980914181128313<132> |