Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 377: | \[{13^{377}-1\over12}\] | 53 × 1973 × 2843 × 3539 × 174929 × 264031 × 1803647 × 89281141 × 846041103974872866961<21> × 3527554837222805075023701605952620963041<40> × 13080909148901307231904438981072995521258107703<47> × 831843434904153571016157627359889434321478734721604600447405859<63> × 18278367807532893142756267014069382070124993595093573637881310691521601781871<77> × 16236484968670928837686949621514487555858687279342769717953336883786113141183915117118024736512434163587784567963836340562397335054608167<137> |