102181

Properties

Appears in sequences

• Value of C in y = x^2 + 9x + C such that y is prime for all x = 0 to 5.at n=24A097437
• Primes which remain prime after reflection across a vertical line through the middle of the number (numbers are written as digital clock style numerals).at n=23A178318
• Emirps that become their own reversals when rotated through 180 degrees (including on calculator display).at n=12A209620
• Number of 2 X 2 matrices having all terms in {1,...,n} and determinant in [-n,n].at n=30A211069
• Prime numbersat n=9785