Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 507: | \[{5^{507}-1\over4}\] | 31 × 79 × 13859 × 62869 × 305175781 × 608459012088799<15> × 784646826705980283039372085276899721<36> × 1006733590176529722850423460072748896758960727573801229970212800434559<70> × 1906359486900354830985624298123962814444540255077464117390730316338939558828318598041860623224838522067848460623785905833573137246652795079321307217152565250113809836567855609627209768372445452975781139405695337229<214> |