90059

Properties

Appears in sequences

• Primes starting and ending with 9.at n=30A062335
• The value of C in y = x^2+13x+C such that y is prime for all x = 0 to 7.at n=4A097459
• Emirps starting and ending with composite digit 9.at n=9A128374
• Primes q such that p = (r+q+s-1)/2 is a balanced prime, where r, q, s are consecutive primes.at n=28A129190
• Numbers n with property that n^2 starts and ends with 81.at n=12A159775
• Emirps whose only prime digits are 5's.at n=31A179036
• Emirps with a 5 as the only prime digit.at n=25A179037
• Irregular triangle read by rows: T(n, k) = number of inequivalent (mod the dihedral group D_8 of order 8) ways to place k nonattacking knights on an n X n board.at n=39A243716
• Primes having only {0, 5, 9} as digits.at n=14A385769
• Prime numbersat n=8722