91009

Properties

Appears in sequences

• Emirps starting and ending with composite digit 9.at n=17A128374
• Primes having only {0, 1, 9} as digits.at n=39A199329
• Value of prime number D for incrementally largest values of minimal x satisfying the equation x^2 - D*y^2 = -5.at n=41A341083
• Primes that are the concatenation of a square and a prime that is the concatenation of two squares.at n=40A364359
• Primes p such that p + q +- 1 and p^3 + q^3 +- 1 are twin prime pairs, where q = nextprime(p).at n=12A366644
• Prime numbersat n=8803