134217781
domain: N
Properties
Primality
- Prime
- yes
Appears in sequences
- a(n) = 2^n + 2*n - 1.at n=27A061761
- Start with Pascal's triangle; form a triangle by sliding down n steps from top on both sides and including the horizontal row, deleting the inner numbers; a(n) = sum of entries on perimeter of triangle.at n=27A081494
- A067076 + A000079/2.at n=28A092176
- Primes of the form 2^k + 2k - 1.at n=9A173168
- Prime numbersat n=7603557