Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 181: | \[{28^{181}-1\over27}\] | 1811 × 3958109 × 1190098531 × 2086770923807<13> × 7711134201229<13> × 30171414356544669161<20> × [77101367692795840875127455565703005229579938161108028638140152121693620436708703755840593224525683783193788372830814458799294288498585269213164954708985286724896405622695308352124024824089419863563<197>] |