Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
161: | \[{28^{161}-1\over27}\] | 47 × 113 × 4422461 × 6961066730472989<16> × 119711833813864153<18> × 1517655145813456319033978812579<31> × 504014143379662254738274886140789618784757605057931001<54> × 243114166198682804303589337237611372350619560565765463638224263170866643850985779833150209926005425056217<105> |