52579

Properties

Appears in sequences

• Irregular table read by rows: row n lists prime factors of 10^n + 1, with multiplicity.at n=20A001271
• Largest prime factor of 10^n + 1.at n=9A003021
• Divisors of 10^9 + 1.at n=16A027901
• Triangle of prime numbers in which n-th row lists all primes p such that 1/p has decimal period n, n >= 1.at n=28A046107
• Greatest prime number p(n) with decimal fraction period of length n.at n=17A061075
• Primes p such that p divides 10^n-1, p is the largest prime producing decimal fraction period n and p is not the largest prime dividing 10^n-1.at n=1A081317
• a(1) = 1, then the smallest prime divisor of A065447(n) not included earlier.at n=35A087552
• Sorted version of A061075.at n=13A181086
• Primes p such that the decimal representation of 1/p does not contain every digit 0-9.at n=30A187614
• Coefficient of x in the reduction of the n-th Fibonacci polynomial by x^3->x^2+2.at n=17A192799
• Irregular triangle read by rows in which row n lists primitive prime factors of the repunit (10^n - 1)/9 (A002275(n)).at n=29A204845
• Powers of primes other than 2 and 5 in order by cycle length of reciprocal in decimal.at n=31A227969
• Number of (2+1) X (n+1) 0..1 arrays x(i,j) with row sums sum{x(i,j), j=1..n+1} nondecreasing, and column sums sum{i^2*x(i,j), i=1..2+1} nondecreasing.at n=14A233302
• Greatest prime factor of n^9+1.at n=9A240552
• Records in A054471.at n=13A243110
• Lexicographically largest increasing sequence of primes for which the continued square root map (see A257574) produces Pi.at n=34A257582
• Largest prime factor of A138148(n).at n=7A269503
• Expansion of g.f. A(x) = G( x*(1 + 2*x)*G(x) )^(1/2) = G( x*(1 + 3*x)*G(x)^2 )^(1/3), where G(x) is the g.f. of A370537.at n=12A370538
• a(n) is the largest prime factor of n^n + n.at n=9A372228
• Primes p such that the first period of the decimal expansion of 1 / p contains no digits of p as many times they are contained in p.at n=23A381661