The same questions regarding "When?" and "How much?" keep coming up over and over again, so I put together this single post to list all the relevant numbers.
- Known Wieferich primes: 1093 and 3511
- Known Wall-Sun-Sun primes: none
- Starting point for our Wieferich and WSS search: 0
- Current planned end of our Wieferich and WSS search: 2^64, or about 1.8e19
- Current range of numbers tested in each task (both Wieferich and WS are tested in each task): 3e12
- Current expectation for the total number of workunits: (including older workunits that were smaller): 6,418,371
- Current expectation for the total number of tasks: 12,836,742 (two tasks per workunit)
- Starting point for PrimeGrid's prior Wieferich search on PRPNet: 3e15
- Ending point for PrimeGrid's prior Wieferich search on PRPNet: 6.07132e17 (or 607.132e15)
- Starting point for PrimeGrid's prior Wall-Sun-Sun search on PRPNet: 9.7e14 (or 0.97e15)
- Ending point for PrimeGrid's prior Wall-Sun-Sun search on PRPNet: 2.6438336e17 (or 264.38336e15)
- At the very beginning of the current search (completed in the first day), when we were double checking numbers smaller than what PRPNet searched, we intentionally skipped reporting near primes. It's not feasible to have a comprehensive list of all near primes at those small sizes, so we couldn't tell what was new and what might have been a new near prime. We did make sure there were no actual primes that had previously been missed.
Rules for what is and is not shown:
- Previously discovered primes and special instances are not shown, otherwise:
- All primes are shown.
- For very small numbers, below 1e9, special instances with |A| <= 10 are shown. 1e9 is 0.1% of the first task so this only applies to the ww_2 workunit.
- For numbers between 1e9 and the end of our PRPNet search, special instances with |A| <= 100 are shown.
- For numbers beyond the PRPNet search, special instances with |A| <= 1000 are shown.
(Edited 1/1/21 to reflect search limit being extended from 2^62 to 2^64 and tasks getting 3x larger.)
My lucky number is 75898524288+1