580337
domain: N
Appears in sequences
- Sarrus numbers that become prime when two is added.at n=18A137198
- Overpseudoprimes to base 2: composite k such that k = A137576((k-1)/2).at n=18A141232
- Lesser of overpseudo-twin-primes to base 2 defined in Comment.at n=5A195468
- Semiprime 2-pseudoprimes of the form 10k + 7.at n=18A216667
- Pseudoprimes to a twin prime criterion of Aebi and Cairns.at n=19A224695
- Strong pseudoprimes (base 2) that become prime when two is added.at n=2A230484
- Strong pseudoprimes k to base 2 such that either k-2 or k+2 is prime.at n=11A230487
- Numbers k such that 2^(k-1) == 1 (mod k) and lpf(k)-1 does not divide k-1.at n=22A316906
- Numbers k such that 2^(k-1) == 1 (mod k) and p-1 does not divide k-1 for every prime p dividing k.at n=19A316907
- Pseudoprimes congruent to 7 mod 10.at n=22A317972