100111001

Properties

Appears in sequences

• Primes whose greatest digit is 1.at n=17A020449
• Binary Gleichniszahlen-Reihe (BGR) sequence: describe previous term (cf. A005150), reduce number of digits seen mod 2 (then for the purposes of this data-base, discard leading zeros).at n=12A045998
• Erroneous version of A134998.at n=23A048662
• Primes p such that p^2 is a palindromic square.at n=6A065378
• Tetradic primes (primes in A006072).at n=8A068188
• Primes using only one nonzero digit (with zero digits allowed).at n=21A069598
• Palindromic primes with digit sum 5.at n=5A070247
• Primes whose decimal representation also represents a prime in base 2.at n=13A089971
• Nonprimitive irreducible polynomials over GF(2) in binary format.at n=6A091253
• Palindromic primes containing digits 0 and 1 only. (Palindromic terms in A020449.)at n=2A100580
• Palindromic primes in base 2 (written in base 2).at n=9A117697
• Dihedral palindromic primes.at n=24A134998
• Smallest palindromic prime made up of 0's and k 1's, where k = A007310(n), odd numbers not divisible by 3.at n=0A158214
• Smallest palindromic prime made up of 0's and p(n) 1's, where p(n) is the n-th prime = A000040(n) (or 0 when no such prime exists).at n=2A158215
• Positive numbers n such that n and phi(n) contain digits 0 and 1 only.at n=19A203304
• "1-ply" palindromic primes; see Comments.at n=7A208361
• Numbers n such that largest digit of all divisors of n is 1.at n=19A209930
• Palindromic primes whose sum of digits is also a palindromic prime.at n=26A222116
• Palindromic primes whose square is also a palindrome.at n=4A225603
• Smallest primes of 2n or more digits such that the number formed from first n digits is same as the number formed from last n digits.at n=3A228533