Base 36 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
53: | \[{36^{53}-1\over35}\] | 107 × 13781 × 97351567 × 33685364386033<14> × 357293834576449<15> × 71080464397105403<17> × 7091531088740602980647<22> |