133121

Properties

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 29.at n=15A031617
• Primes of form 2^x + 2^y + 1.at n=37A070739
• Primes of the form 2^i + 2^j + 1, i > j > 0.at n=32A081091
• Primes whose representation in base 256 can be interpreted as a decimal prime.at n=23A090719
• Smallest prime between 2^n and 2^(n+1), having a minimal number of 1's in binary representation.at n=16A091936
• Pythagorean primes p such that for all primes q < p, p XOR q is not equal to p - q.at n=40A197918
• Primes of the form 8n^2 - 7.at n=27A201858
• Primes that have exactly 3 ones in both their binary and ternary expansions.at n=18A280997
• Prime numbers whose binary expansion contains only prime powers of 2 and the zeroth power.at n=20A342475
• Odd primes whose base-2 representation has no proper substrings that are base-2 representations of odd primes.at n=18A365518
• Prime numbersat n=12426