26399

Properties

Appears in sequences

• a(n) = prime(100*n).at n=28A031921
• Primes in which no digit is coprime to its neighbors.at n=36A088297
• If p(k) is the k-th prime, then the n-th set of 3 consecutive cousin prime pairs starts at p(a(n)).at n=36A095970
• Least prime p such that sigma(x)=sigma(p) has exactly n solutions.at n=21A115374
• Primes p for which Sum_{1 <= n < p} (n!|p) == 0 (mod p), where (n!|p) is the Legendre symbol.at n=39A131652
• Primes p such that (p-7)/8 and 8p + 7 are both prime.at n=28A158238
• a(n) = 66*n^2 - 1.at n=19A158693
• Primes p dividing every A167859(m) from m=(p-1)/2 to m=(p-1).at n=32A167860
• Meandric numbers for a river crossing up to 5 parallel roads at n points.at n=12A208126
• Least number k such that 2^k begins with exactly n identical digits.at n=6A235713
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 147", based on the 5-celled von Neumann neighborhood.at n=34A270292
• Primes such that A271229(n) = prime(n).at n=33A276649
• Positions of pandigital 10-digit numbers after the decimal point in the decimal expansion of Pi.at n=12A280183
• Prime p1 of consecutive primes p1, p2, where p2 - p1 = 8, and p1, p2 are in different centuries.at n=18A287049
• Number of nX5 0..1 arrays with every element unequal to 0, 2, 3 or 6 king-move adjacent elements, with upper left element zero.at n=12A304138
• Number of compositions of n with distinct differences up to sign.at n=25A325552
• a(0) = a(1) = 1, a(n) is the smallest positive integer m >= a(n-1) + a(n-2) such that gcd(a(k),m) = 1 for all 1 < k <= n - 1.at n=21A345471
• 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=32A350781
• Positions of records in A205561.at n=31A378189
• Prime numbersat n=2900