Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
323: | \[{5^{323}-1\over4}\] | 191 × 409 × 6271 × 3981071 × 466344409 × 3247691391126251<16> × 824025642333621472612253607491152025643258690550015151<54> × 4520075300365525822415973296109200878340148487916084028121991<61> × 132981150324062454692451481044833258173562011479994362058454095433879531<72> |