26393

Properties

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has period 95.at n=21A020434
• Numerators of continued fraction convergents to sqrt(508).at n=7A041970
• Numbers n such that 1n1, 3n3, 7n7 and 9n9 are all primes.at n=35A059677
• Primes p such that 1p1, 3p3, 7p7 and 9p9 are all primes.at n=9A059694
• Numbers n such that the absolute value of the real part of (1+2*I)^n is prime.at n=22A073019
• a(1) = 7 then the smallest number such that the forward as well as the reverse n-th partial concatenation is a prime for n>1. (Reverse concatenation is taken term-wise and not digit-wise).at n=35A083994
• Primes in which no digit is coprime to its neighbors.at n=35A088297
• Positive integers of the form (18*m^2+1)/11.at n=23A113338
• Primes of the form Sum_{k=1..m} (m^k mod (m-k+1)).at n=44A156559
• Primes p such that 2*p^4-+21 are also prime.at n=37A174367
• 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=26A292618
• Numbers k such that (11^k + 6^k)/17 is prime.at n=6A338525
• Prime numbersat n=2899