41213

Properties

Appears in sequences

• Primes of form k^2 + 4.at n=34A005473
• Numbers k such that 123*2^k+1 is prime.at n=23A032411
• Second term p(m) of strong prime sextets: p(m)-p(m-1) > p(m+1)-p(m) > p(m+2)-p(m+1) > p(m+3)-p(m+2) > p(m+4)-p(m+3).at n=13A054814
• "Fibonacci-digits": start with "11", append sum of first 2 digits to the preceding number, drop first digit.at n=9A093099
• Value of C in y = x^2+7x+C such that y is prime for all x = 0 to 4.at n=34A097436
• Primes of the form n^2 + 4n + 8.at n=33A098062
• Prime septets of form k, k+2100, k+4200, k+6300, k+8400, k+10500, k+12600.at n=24A123107
• Primes obtained from other primes by prefixing a 4.at n=40A165444
• Numbers k such that k^p-p is prime, where p is product of the digits of k.at n=29A178328
• Numbers n such that (17^n + 3^n)/20 is prime.at n=4A228225
• Initial primes of 5 consecutive primes with consecutive gaps 8,6,4,2.at n=3A289907
• Primes p such that p^2 divides A087935(p).at n=6A306786
• Smallest k such that 2^(3*2^n) - k is a safe prime.at n=6A335313
• a(n) is the start of the first occurrence of exactly n consecutive zeroless primes (A038618).at n=25A384793
• Primes p such that p + 8, p + 14, p + 18 and p + 20 are also primes.at n=12A385035
• Prime numbersat n=4314