A363187Prime numbers that are the average of three consecutive odd semiprimes.
31, 41, 59, 83, 107, 139, 163, 191, 197, 281, 311, 383, 397, 443, 521, 673, …
The first 3 terms appear at position 176,451.
…82306647093844609550582231725359408128481117450284…
…2091444210067510334671103141267111369908658516398315…
…580057761373094604324573314159787616555372263016164233…
…92233194761351002667188131415983024496422792667208147330…
| terms | string | first position | occurrences |
|---|---|---|---|
| 1 | 31 | 137 | 9,995,316 |
| 2 | 3141 | 3,496 | 99,801 |
| 3 | 314159 | 176,451 | 1,002 |
| 4 | 31415983 | 73,479,279 | 6 |
| 5 | 31415983107 | not within 1,000,000,000 | 0 |
Searched the first 1,000,000,000 digits. Strings longer than 12 digits are not indexed.