Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 152: | \[{18^{152}-1\over17}\] | 52 × 13 × 192 × 113 × 929 × 6841 × 60497 × 269117 × 3539777 × 74792209 × 6261053129<10> × 202438500542522921<18> × 6089884909802812423<19> × 1961870762757168078553<22> × 677080532840701735758569273964609800074705481019247070093955059732080735738423252913<84> |