28597

Properties

Appears in sequences

• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 90 ones.at n=34A031858
• Numbers n such that the smallest possible number of multiplications required to compute x^n is by 2 less than the number of multiplications obtained by Knuth's power tree method.at n=2A115614
• Prime septets of form k, k+2100, k+4200, k+6300, k+8400, k+10500, k+12600.at n=15A123107
• Smaller member p of a pair (p,p+6) of consecutive primes in different centuries.at n=19A160370
• (1, 3, 5, 7, 9, ...) convolved with (1, 0, 3, 5, 7, 9, ...).at n=35A179903
• Primes p=u^2+v^2 such that p+u or p+v is the next prime after p.at n=28A213996
• Primes of form n^2 + 28561.at n=0A256841
• The first prime of 8 consecutive primes a, b, c, d, e, f, g, h such that a + g = c + e and b + h = d + f.at n=27A292618
• Number of nX4 0..1 arrays with every element unequal to 0, 1, 2, 3, 5 or 8 king-move adjacent elements, with upper left element zero.at n=5A316205
• Number of nX6 0..1 arrays with every element unequal to 0, 1, 2, 3, 5 or 8 king-move adjacent elements, with upper left element zero.at n=3A316207
• T(n,k)=Number of nXk 0..1 arrays with every element unequal to 0, 1, 2, 3, 5 or 8 king-move adjacent elements, with upper left element zero.at n=39A316209
• T(n,k)=Number of nXk 0..1 arrays with every element unequal to 0, 1, 2, 3, 5 or 8 king-move adjacent elements, with upper left element zero.at n=41A316209
• Primes p such that (p^128 + 1)/2 is prime.at n=21A341230
• Primes p whose reverse q is a semiprime, and of p+q and its reverse one is a prime and the other is a semiprime.at n=41A350781
• Primes p such that the sum and difference of the fourth power of the sum of 4 consecutive primes starting with p and the product of those primes are both prime.at n=12A389333
• Prime numbersat n=3112