25561

Properties

Appears in sequences

• Indices of prime Fibonacci numbers.at n=27A001605
• Numbers n such that n_0=n_1=n_2, where n_i = (n+i)-th prime - sigma(n+i) - phi(n+i).at n=1A048791
• Numbers k such that 10^999 + k is a (titanic) prime.at n=14A074282
• Prime indices of prime Fibonacci numbers.at n=26A083668
• Primes of the form 5k^2 + 5k + 1.at n=37A090562
• Sums of p-th to the q-th prime where p and q are twin primes.at n=38A114379
• Numbers k such that (4^k + 5^k)/9 is prime.at n=10A128335
• Smallest prime factor of n! + 2^n - 1.at n=18A139023
• Primes p such that the multiplicative order of 2 modulo p is (p-1)/10.at n=35A152310
• The A161671(n)-th partial sum of A161671.at n=39A161778
• Final prime adjoined in the smallest term of A019518 divisible by 83^n.at n=1A185710
• Numbers n such that the n-th Fibonacci number is prime, but cannot be written in the form a^2 + 7*b^2.at n=12A216536
• Numbers n such that the n-th Fibonacci number is prime and can be written in the form a^2 + 3*b^2.at n=13A216552
• Numbers n such that the n-th Fibonacci number is prime and can be written in the form a^2 + 2*b^2.at n=13A216558
• Numbers n such that the n-th Fibonacci number is prime and can be written in the form a^2 + 5*b^2.at n=12A216559
• Numbers n such that the n-th Fibonacci number is prime and can be written in the form a^2 + 6*b^2.at n=6A216569
• Numbers k such that Fibonacci(k) is prime and can be written in the form a^2 + 10*b^2.at n=5A216573
• Primes p such that p = 361 + 420*k for some k.at n=23A217656
• Primes of the form 5*p^2+5*p+1, where p is a prime.at n=10A225874
• Numbers k such that (15^k + 4^k)/19 is prime.at n=6A227049