37967

Properties

Appears in sequences

• Primes that remain prime through 4 iterations of function f(x) = 10x + 9.at n=14A023329
• Primes that remain prime through 5 iterations of the function f(x) = 10x + 9.at n=4A023357
• Odd k for which k+2^m is composite for all m < k.at n=17A033919
• For n > 1, a(n) is the smallest number such that n-th concatenation is prime and the smallest palindrome beginning with (but not equal to) this concatenation is also prime.at n=20A088090
• Balanced primes of order twelve.at n=12A096704
• Home primes whose homeliness is greater than 5.at n=19A133965
• Home primes whose homeliness is greater than 6.at n=9A133967
• Home primes whose homeliness is 7.at n=6A133968
• a(n)=sum{k=0..floor(n/2), binomial(n-k,k)*A186338(k)}.at n=12A186341
• Numbers k such that (17^k + 4^k)/21 is prime.at n=7A228558
• Number of nX5 0..1 arrays with every element equal to 0, 1, 3, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.at n=8A300941
• Primes p such that (p+nextprime(p))/6 is prime and 6*p is the sum of two consecutive primes.at n=39A339775
• The number of even prime gaps g, satisfying g == 4 (mod 6), out of the first 2^n even prime gaps.at n=17A341532
• Positions of records in A205561.at n=36A378189
• Prime numbersat n=4013