41399

Properties

Appears in sequences

• Numbers whose set of base-14 digits is {1,3}.at n=32A032921
• Sums of groups in A075635.at n=40A075636
• Primes p such that 2*p+1 and ((2*p+1)^2 + 1)/2 = p^2 + (p+1)^2 are primes.at n=41A098717
• Smallest of 3 consecutive prime numbers such that p1*p2*p3*d1*d2=average of twin prime pairs; p1,p2,p3 consecutive prime numbers; d1(delta)=p2-p1, d2(delta)=p3-p2.at n=26A153409
• a(n) = 46*n^2 - 1.at n=29A158634
• Primes obtained from other primes by prefixing a 4.at n=43A165444
• 1, followed by list of numbers n such that the number of strong primes and the number of weak primes are equal at the n-th prime.at n=35A175102
• Primes p such that 2p+1, 3p+2 and 5p-2 are also primes.at n=33A178068
• Primes of the form 5n^2 - 6.at n=8A201787
• a(n) is the base-(-10) representation of a(n-1) read in base 10, starting from -1.at n=14A256639
• Numbers n such that n!3 - 3^8 is prime, where n!3 = n!!! is a triple factorial number (A007661).at n=36A261344
• a(n) = prime that is eventually reached when x -> sigma(x)-1 is repeatedly applied to 2^n-1, or -1 if no prime is ever reached.at n=13A291776
• Primes which yield again a prime when the digits are taken according to the lexicographically first superpermutation of corresponding order and of minimal length.at n=40A332088
• Prime numbersat n=4332