124121

Properties

Appears in sequences

• Prime numbers p of the form 10k+1 for which the quintic polynomial x^5-x-1 modulus p is factorizable into five binomials.at n=24A135842
• Primes formed by concatenating n with n-3.at n=12A279213
• Numerators of coefficients in expansion of (cos x)/(1 - x - x^2).at n=8A279310
• Prime-indexed primes q such that prime(q) + q + 1 is a prime-indexed prime.at n=28A318292
• a(n) is the cyclic length of the iterative sequence f(k) = prime(f(k-1) mod 2^n) with f(0) = 1.at n=35A326613
• Partition the decimal expansion of Pi into non-overlapping strings of length 10: 3141592653, 5897932384,..; a(n) is the position of the strings where digits are different from each other.at n=35A329368
• Prime numbersat n=11657