22441

Properties

Appears in sequences

• Primes that are palindromic in base 11.at n=30A029978
• Euclid-Mullin sequence (A000945) with initial value a(1)=71 instead of a(1)=2.at n=19A051324
• Primes with 14 as smallest positive primitive root.at n=16A061327
• Primes whose decimal representation is a valid number in base 5 and interpreted as such is again a prime.at n=38A090708
• Smallest prime of the form concatenation n, 2n, 3n,...kn and 1.at n=21A090921
• Prime numbers p such that p +- ((p-1)/4) are primes.at n=23A137705
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 1), (-1, 1, 1), (0, 1, 0), (1, 0, -1), (1, 1, 0)}.at n=8A150168
• Primes p such that p^3-p-+1 are twin primes.at n=29A158295
• Primes p0 such that p0+p1+p2-+2 are primes; p0,p1,p2 are three consecutive primes.at n=24A158351
• Chen primes A109611(k) which have the same sum-of-digits as their index k.at n=40A176012
• Centered 40-gonal numbers.at n=33A195317
• Primes of the form 5*k^2 - 4.at n=17A201786
• Number of arrays of 6 nondecreasing integers in -n..n with sum zero and equal numbers greater than zero and less than zero.at n=15A203293
• Primes p such that four consecutive primes starting with p are congruent to {1,2,3,4} (mod 5).at n=29A215607
• Primes that are the sum of 25 consecutive primes.at n=28A215991
• Primes of the form 2*n^2 + 46*n + 21.at n=9A217495
• Number of (3+1) X (n+1) 0..1 arrays with every 2 X 2 subblock ne-sw antidiagonal difference nondecreasing horizontally and nw+se diagonal sum nondecreasing vertically.at n=21A258556
• Primes having only {1, 2, 4} as digits.at n=26A260267
• Prime numbersat n=2510