Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
65: | \[{13^{65}-1\over12}\] | 53 × 131 × 1171 × 30941 × 156131 × 264031 × 1803647 × 71442881968439190301<20> × 158943831041162255277151<24> |