72271

Properties

Appears in sequences

• Primes that remain prime through 3 iterations of function f(x) = 6x + 1.at n=32A023287
• Twin primes belonging to packs of four or more twin pairs.at n=23A068220
• Start with 1 and repeatedly reverse the digits and add 66 to get the next term.at n=27A118200
• Primes formed by concatenating palindromes having even number of digits with 1.at n=23A210534
• Primes p = 1 mod 6 such that all three iterations p=(6p+1) give primes = 1 mod 6.at n=16A210686
• Triangle read by rows: T(n,k) (n >= 2, 1 <= k <= n-1) = Euclidean distance degree of variety of n X n matrices of rank <= k.at n=16A232496
• Triangle read by rows: T(n,k) (n >= 2, 1 <= k <= n-1) = Euclidean distance degree of variety of n X n matrices of rank <= k.at n=19A232496
• Primes whose base-9 representation also is the base-3 representation of a prime.at n=35A235472
• Number of length n+4 0..4 arrays with every five consecutive terms having the maximum of some two terms equal to the minimum of the remaining three terms.at n=4A254694
• T(n,k)=Number of length n+4 0..k arrays with every five consecutive terms having the maximum of some two terms equal to the minimum of the remaining three terms.at n=32A254698
• Number of length 5+4 0..n arrays with every five consecutive terms having the maximum of some two terms equal to the minimum of the remaining three terms.at n=3A254703
• Primes that can be generated by the concatenation in base 9, in ascending order, of two consecutive integers read in base 10.at n=29A287312
• Prime numbersat n=7154