61681

Properties

Appears in sequences

• Table T(n,k) in which n-th row lists prime factors of 2^n + 1 (n >= 0), with repetition.at n=43A001269
• Largest prime factor of 2^n + 1.at n=20A002587
• Largest prime factor of 16^n + 1.at n=5A002590
• Quintan primes: p = (x^5 + y^5)/(x + y).at n=24A002650
• Numerators of coefficients for central differences M_{4}^(2*n).at n=19A002675
• Largest prime factor of 2^n - 1.at n=38A005420
• Numbers n such that game of n X n Button Madness need have no solution; this lists only the primitive elements of the set.at n=15A007802
• Triangle of (Gaussian) q-binomial coefficients for q=-16.at n=16A015139
• Triangle of (Gaussian) q-binomial coefficients for q=-16.at n=19A015139
• Cyclotomic polynomials at x=2.at n=40A019320
• Cyclotomic polynomials at x=4.at n=20A019322
• Cyclotomic polynomials at x=-4.at n=20A020503
• 10th cyclotomic polynomial evaluated at powers of 2.at n=4A020518
• Table T(n,k) in which n-th row lists prime factors of 2^n + 1 (n >= 0), without repetition.at n=38A060444
• a(n) = n^4 - n^3 + n^2 - n + 1.at n=16A060884
• a(n) = n^8 - n^6 + n^4 - n^2 + 1.at n=4A060892
• Primes with 29 as smallest positive primitive root.at n=11A061733
• Zsigmondy numbers for a = 2, b = 1: Zs(n, 2, 1) is the greatest divisor of 2^n - 1 (A000225) that is coprime to 2^m - 1 for all positive integers m < n.at n=39A064078
• Zsigmondy numbers for a = 4, b = 1: Zs(n, 4, 1) is the greatest divisor of 4^n - 1^n (A024036) that is relatively prime to 4^m - 1^m for all positive integers m < n.at n=19A064080
• A level 11 weight 5 form.at n=15A065103