Base 27 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 387: | \[{27^{387}-1\over26}\] | 109 × 431 × 433 × 757 × 4129 × 8209 × 2199072289 × 308842594561<12> × 380808546861411923<18> × 14768624338244430229<20> × 269123363760531549673<21> × 912851565662857110894244969<27> × 1535924896908813914670352117<28> × 19883793469378176373136546038842994063371691807806092869125056219155739754744344670610513<89> × [222810923712704610889367626044686442355468939614292563579347875811675774694825379665324945147177530492909265597188934467607796916740969923595279680192500228844988047918292742366490028523659204925143859317965861542728072291410573044874735102063800578101315135046971107088358638294070054115312963775612799865768271313<315>] |