1123211

Properties

Appears in sequences

• Palindromic prime concatenated with next palindromic prime is a prime.at n=7A030462
• Previous palindromic prime concatenated with this palindromic prime is prime.at n=6A030463
• Palindromic primes containing at least one pair of consecutive equal digits.at n=23A050786
• Smallest sets of 3 consecutive palindromic primes (palprimes) in arithmetic progression. The first prime of each set is listed.at n=6A059120
• Let p = abc..k be a prime in base 10. Define mirror(p) = abc...k...cba. Sequence gives primes of the form mirror(p) for some p.at n=26A068686
• Smallest prime of the form 1,n,2n,...(k-1)n,kn,(k-1)n,...2n,n,1 for some k.at n=0A069583
• Palindromic primes with digit sum = 11.at n=3A070831
• Palindromic primes with middle digit 3.at n=20A082439
• Palindromic primes with nondecreasing digits up to the middle and then nonincreasing.at n=36A084836
• Palindromic primes that yield a prime when sandwiched between two 7's. (Prefixing and suffixing a 'seven' on both sides yields another pal prime).at n=24A088271
• Palindromic good primes.at n=9A096473
• Palindromic primes p such that digit sum of p is a substring.at n=7A109208
• Palindromic primes pp such that digit sum of pp as substring appears more than once in pp.at n=0A109209
• Palindromic primes with both the number of digits and the digit sum also palindromic primes.at n=13A109830
• Palindromic primes in base 4 (written in base 4).at n=20A117699
• Palindromic primes in base 5 (written in base 5).at n=28A117700
• Palindromic primes in base 6 (written in base 6).at n=39A117701
• An example of a stereogram: a flat picture that appears three-dimensional when viewed in the correct way.at n=9A123727
• An example of a stereogram: a flat picture that appears three-dimensional when viewed in the correct way.at n=15A123727
• An example of a stereogram: a flat picture that appears three-dimensional when viewed in the correct way.at n=17A123727