Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 499: | \[{5^{499}-1\over4}\] | 20959 × 2795399 × 50573560181<11> × 346499817589<12> × 6903502430791<13> × 21458420289631979969638832313819865760052281<44> × 39665016350463758467729548077662016642484624040803171652769<59> × 253195745909366995872762360486378643003750269111087051769576918257212915691124222283182847989686032857671286816867426485222870540081615673784465703187834951450749954019552848736575900949274096028802801<201> |