262151

Properties

Appears in sequences

• Primes whose representation in base 512 can be interpreted as a decimal prime.at n=11A090720
• Primes of the form 2^k + 7.at n=6A104066
• Prime numbers of the form 8^k +- 7.at n=1A144242
• Primes of the form 8^k + 7. Also, primes of the form 64^m + 7.at n=1A144360
• a(n) = 2^n + 7.at n=18A168415
• Primes of the form (k+1)^(k-1) + k.at n=4A187602
• Second smallest prime after 2^n.at n=18A187872
• a(n) = 4^(n+1) + 7.at n=8A195463
• Primes of the form n^3 + 7.at n=7A201261
• Smallest twin prime > 2^n.at n=17A208572
• Union of A208572 and A208573.at n=31A208574
• Primes of the form m = 2^i + 2^j - 1, where i > j >= 0.at n=46A239712
• Primes of the form m = 8^i + 8^j - 1, where i > j >= 0.at n=3A239718
• a(n) = 8^n + 7.at n=6A253211
• Permutation of natural numbers: a(n) = A156552(A244154(n)).at n=52A253792
• Primes of the form 2^x + y (x >= 0 and 0 <= y < 2^x) such that all the numbers 2^(x+a) + (y-a) (0 < a <= y) are composite.at n=48A264866
• Numbers n > 1 such that 2^(n-1) and (2*n-m)*2^(((n-1)/2) - floor(log_2(n))) are congruent to 1 (mod n) for at least one of m = 3, m = 7 and m = 15.at n=15A295196
• Lexicographically first sequence of positive integers such that all terms are pairwise coprime and no subset sum is a power of 2.at n=25A363245
• Prime numbersat n=23002