Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 437: | \[{5^{437}-1\over4}\] | 191 × 6271 × 8971 × 3981071 × 48398105719<11> × 59147335579<11> × 332207361361<12> × 1731602302088401779666415054846764658291238739520646126187033319284107873728033891408347977537375667145311952607487526594389964939246930441459157689631380345607345371641891465772927581836374067809600870695349921693134182090304918129564640050970413962435821<256> |