23459

Properties

Appears in sequences

• a(n) = smallest prime q such that precisely n successive primes p starting at q have reciprocals with period p-1 and prevprime(q) is not such a prime.at n=5A060263
• Balanced primes of order seven.at n=22A096699
• Primes p such that 2*p+1 and ((2*p+1)^2 + 1)/2 = p^2 + (p+1)^2 are primes.at n=29A098717
• Smallest prime of the form: n successive positive integers in ascending order followed by a 9. a(3k) = 0 as no such prime exists.at n=3A114757
• Father primes of order 11.at n=23A136080
• Primes p such that 42*p-1, 42*p+1 and 48*p-1, 48*p+1 are twin primes.at n=9A138697
• Positive integers of the form (7*m^2+1)/11.at n=34A179370
• Primes remaining primes under map 3<=>5 (interchange of decimal digits 3 and 5).at n=32A198047
• Primes that are the sum of 51 consecutive primes.at n=15A215992
• Primes p such that A276173(p) = p.at n=35A276174
• Prime partial sums of the primes == 1 (mod 6).at n=8A354572
• Primes of the form (p*q*r - p - q - r)/2, where p, q, r are consecutive primes.at n=2A390797
• Prime numbersat n=2611