33533

Properties

Appears in sequences

• Primes that contain digits 3 and 5 only.at n=7A020462
• Previous palindromic prime concatenated with this palindromic prime is prime.at n=2A030463
• Numbers having four 3's in base 10.at n=28A043504
• Palindromic terms from A019546.at n=9A045336
• Numbers n such that 147*2^n-1 is prime.at n=33A050599
• Palindromic primes containing at least one pair of consecutive equal digits.at n=7A050786
• Palindromic primes whose sum of squared digits is also prime.at n=22A052035
• Palindromic primes with just two distinct digits.at n=23A056730
• Palindromic primes with just two distinct prime digits.at n=5A058375
• Smallest prime beginning and ending in at least n 3's.at n=1A068161
• a(1) = 5; a(2n) = smallest prime that is a right concatenation of a(2n-1) and a number with no insignificant zeros and a(2n+1) = smallest prime ending in ( the least significant digits) a(2n-1). Alternate left and right concatenation yielding primes.at n=4A069617
• a(1) = 5; a(2n) = smallest prime starting (most significant digits) with a(2n-1). a(2n+1) = smallest prime ending (least significant digits)in a(2n).at n=4A069632
• Smallest prime > 2n+1 beginning and ending with 2n+1, or 0 if no such prime exists.at n=16A070278
• Palindromic primes in which deleting the outside pair of digits yields a prime at every stage until finally a single-digit prime is obtained.at n=13A071119
• Smallest prime beginning and ending in 2n+1 or 0 if no such prime exists.at n=16A071234
• Palindromic primes with prime middle digit.at n=26A076611
• Palindromic wing primes (a.k.a. near-repdigit palindromic primes) of the general form r*(10^d - 1)/9 + (m-r)*10^floor(d/2) where d is the number of digits (an odd number > 1), r is the repeated digit, and m (different from r) is the middle digit.at n=17A077798
• Palindromic primes = 1 mod 4.at n=25A081220
• Palindromic primes with middle digit 5.at n=8A082441
• Palindromic prime units W appearing twice in first-order fractal palindromic primes WmW.at n=29A082598