21523

Properties

Appears in sequences

• Numbers m such that the positive values of m - A002110(k) are all primes (k > 0).at n=41A068372
• Primes p such that positive values of p - A002110(k) are all primes for k > 0.at n=20A068374
• Primes p such that p + googol is prime.at n=15A108250
• Primes p such that p - 6^2, p - 6, p + 6 and p + 6^2 are also primes.at n=39A141279
• First prime not the middle of a prime two digits longer in base n.at n=9A172514
• Primes with nonzero digits such that sum of cubes of digits equal to square of sums.at n=5A225567
• Number of length n+5 0..2 arrays with every six consecutive terms having the maximum of some three terms equal to the minimum of the remaining three terms.at n=5A250330
• T(n,k)=Number of length n+5 0..k arrays with every six consecutive terms having the maximum of some three terms equal to the minimum of the remaining three terms.at n=26A250336
• Number of length 6+5 0..n arrays with every six consecutive terms having the maximum of some three terms equal to the minimum of the remaining three terms.at n=1A250342
• Primes of the form k!6+18, where k!6 is the sextuple factorial number (A085158).at n=6A288614
• Primes p such that the sum of the squares of digits of p equals the sum of digits of p^2.at n=6A290972
• Partial sums of A299268.at n=23A299269
• Number of partitions p of n such that (number of numbers in p that have multiplicity 1) < (number of numbers in p having multiplicity > 1).at n=43A330001
• Twin primes p such that the absolute difference of p and the reverse of its twin is a twin prime.at n=43A342216
• Numbers that are the sum of eight fourth powers in nine or more ways.at n=26A345584
• Numbers that are the sum of eight fourth powers in ten or more ways.at n=13A345585
• Prime numbersat n=2416