Base 4 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 484: | \[{4^{484}-1\over3}\] | 5 × 17 × 23 × 89 × 353 × 397 × 683 × 727 × 2113 × 3389 × 91961 × 117371 × 209089 × 33186913 × 1251287137 × 2931542417 × 4036962584010807014809213<25> × 11054184582797800455736061107<29> × 1786393878363164227858270210279<31> × 1339272539833668386958920468400193<34> × 38608979869428210686559330362638245355335498797441<50> × 8469440919770574005769693908434732506225873994236085602665729<61> |