73757

Properties

Appears in sequences

• Primes with only prime digits and whose initial, all intermediate and final iterated sums of digits are primes.at n=28A070029
• Prime-indexed primes (PIPs) whose digits are all primes.at n=23A087368
• Primes of the form 2^x+x+y+2^y, with x and y integers of any sign.at n=19A162574
• Number of daughters to wait before picking in the sultan's dowry problem that is not equal to round(n*e^(-1 - 1/(2*n))).at n=3A226082
• Primes having primitive roots 2, 3, 5, 7, 11, 13, and 17.at n=26A241048
• a(n) = (A269590(n)^2 + 4)/5^n, n >= 0.at n=8A269594
• a(n) = Sum_{k=1..n} k^2*phi(k), where phi is the Euler totient function A000010.at n=25A319087
• Primes where every other digit is 7 starting with the rightmost digit, and no other digit is 7.at n=34A348560
• Prime numbersat n=7283