514447
domain: N
Appears in sequences
- Strong pseudoprimes to base 15.at n=32A020241
- Pseudoprimes whose prime factors do not divide any smaller pseudoprime.at n=16A084653
- Overpseudoprimes to base 2: composite k such that k = A137576((k-1)/2).at n=17A141232
- Pseudoprimes to base 2 of the form 4k+3.at n=25A177884
- Poulet numbers (2-pseudoprimes) of the form 144*n^2 + 222*n + 85.at n=11A214017
- Semiprime 2-pseudoprimes of the form 10k + 7.at n=17A216667
- Composite numbers k == 3 (mod 4) such that (1 + i)^k == 1 - i (mod k), where i = sqrt(-1).at n=6A270697
- Pseudoprimes congruent to 7 mod 10.at n=21A317972
- Fermat pseudoprimes to base 2 that are decagonal.at n=15A321870
- Base-2 Fermat pseudoprimes k such that the multiplicative order of 2 modulo k is odd.at n=10A367230