23293
domain: N
Properties
Primality
- Prime
- yes
Appears in sequences
- Primes that remain prime through 4 iterations of function f(x) = 2x + 5.at n=18A023304
- Primes that remain prime through 5 iterations of function f(x) = 2x + 5.at n=5A023332
- Take A000040, omit commas: 23571113171923..., select 5-digit primes seen when scanning from left.at n=3A073038
- Primes that are a concatenation of 2, 3 and a prime.at n=14A101218
- Primes and their indices such that when their respective SOD's are both prime, the SOD of the index is the nextprime of the prime SOD.at n=36A117458
- The primes created by concatenation of anti-divisors in A191647.at n=16A191859
- Number of arrays of -4..4 integers x(1..n) with every x(i) in a subsequence of length 1, 2, 3 or 4 with sum zero.at n=5A193706
- T(n,k)=Number of arrays of -k..k integers x(1..n) with every x(i) being in a subsequence of length 1, 2, 3 or 4 with sum zero.at n=41A193710
- G.f.: A(x) = 1 + Sum_{n>=1} x^n*A(x)^(3^n).at n=6A195260
- Number of n X 2 0..1 arrays with no element less than a strict majority of its horizontal, vertical, diagonal and antidiagonal neighbors.at n=10A231509
- Numbers n such that n!3 - 3 is prime, where n!3 = n!!! is a triple factorial number (A007661).at n=31A242994
- Primes having only {2, 3, 9} as digits.at n=31A260128
- a(n) is the sum of the prime factors (with repetition) of the sum of the preceding terms; a(1)=a(2)=1.at n=44A268868
- a(n) is the sum of the prime factors, with repetition, of the sum of all preceding terms, with initial terms a(1)=1 and a(2)=2.at n=29A269004
- Records in A268868.at n=16A271927
- Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 637", based on the 5-celled von Neumann neighborhood.at n=26A273306
- Digits of the Copeland-Erdős constant taken in groups of five digits.at n=12A304652
- Numerator of the average distance among first n primes.at n=47A332094
- Numbers b > 1 such that the smallest four primes, i.e., 2, 3, 5 and 7 are base-b Wieferich primes.at n=26A339533
- Prime numbersat n=2597