216457
domain: N
Appears in sequences
- Strong pseudoprimes to base 5.at n=26A020231
- Strong pseudoprimes to base 78.at n=34A020304
- Strong pseudoprimes to base 88.at n=30A020314
- Numbers k such that x^k + x^4 + 1 is irreducible over GF(2).at n=17A057463
- Overpseudoprimes to base 5.at n=14A141390
- Composite numbers k == 3, 7 (mod 10) such that 5^((k-1)/2) == -1 (mod k).at n=3A375916