Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 446: | \[{5^{446}-1\over4}\] | 2 × 3 × 355909 × 187373521 × 1588248792798900263<19> × 64020956436201443428737029803881709<35> × 28972415246940047488017177838940636982760270727<47> × 223988698226129145976861549596872406162886461889<48> × 521089119787280089254800421111525630620125478529313813707020482611788594850878926775848894341419918790524954291125141402303617973258996735924842895159<150> |