25219

Properties

Appears in sequences

• Second term p(m) of strong prime sextets: p(m)-p(m-1) > p(m+1)-p(m) > p(m+2)-p(m+1) > p(m+3)-p(m+2) > p(m+4)-p(m+3).at n=6A054814
• Equal count of primes congruent to 1 mod 4 and 3 mod 4 associated with primes in A007351 (the zero beginning the sequence indicates the prime 2).at n=26A092198
• Primes p such that primorial(p)/2 + 2 is prime.at n=21A096177
• Primes of the form 6n^2 - 2n - 1.at n=22A099007
• Primes p such that their cubes are pandigital.at n=24A124629
• Index of starting position of n-th generation of terms in A063882.at n=13A132174
• Let a(1)=1; for n>1 a(n)=nextprime(a(n-1)+(a(n-1)+1)/4).at n=37A175953
• Wiener index of a benzenoid consisting of a double-step spiral chain of n hexagons (n>=2, s=21; see the Gutman et al. reference).at n=15A193397
• Initial primes of sets of 8 consecutive primes all different by modulo 30.at n=49A248199
• Numerators of the Fabius function F(3/2^n).at n=3A277429
• Primes p whose last digit is the same as that of both its predecessor prime and its successor prime.at n=23A298075
• Irregular table whose rows list the nontrivial cycles of the ghost iteration A329201, starting with the smallest member.at n=12A329342
• Slowest increasing sequence of primes such that a(n - 1) + a(n) and a(n - 1)^2 + a(n)^2 are both semiprimes, with a(1)=2.at n=21A365050
• Numbers m which satisfy the equation: (m - floor((m - k)/k)) mod k = 1 (1 <= k <= m) only for k = 2 and m - 1.at n=40A378275
• Prime numbersat n=2782