Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 328: | \[{31^{328}-1\over30}\] | 27 × 13 × 37 × 83 × 409 × 1129 × 30341 × 31697921 × 2887427517866976061<19> × 7066933486329661873<19> × 42481797154433176612759<23> × 132259604354473376342663326676479453<36> × 61865491146216383674809135780235913078137<41> × 76201526049038060101885869496426232539369613779767836882776280785575655946556107450752337<89> × 2322431112061021980104675872457081867878689361482939558747291940389392277191963579218883420952401<97> × 17174183375263846421660548748384622174644483116654486548650622058256968710661106568416735836052640435146220511772353894593274039530229810222513<143> |