100801

Properties

Appears in sequences

• a(n) = least primitive factor of 2^(2n+1) - 1.at n=37A002184
• Primes having only {0, 1, 8} as digits.at n=23A061247
• Prime hypotenuses of Pythagorean triangles with a prime leg.at n=18A067756
• a(n) = A077739(n)/n.at n=13A077740
• a(n) = A077739(n)/n.at n=20A077740
• a(n) = A077739(n)/n.at n=12A077740
• a(n) = A077739(n)/n.at n=28A077740
• a(n) = A077739(n)/n.at n=36A077740
• a(n) = A077739(n)/n.at n=22A077740
• a(n) = A078213(n)/n.at n=28A078214
• a(n) = A078213(n)/n.at n=22A078214
• a(n) = A078213(n)/n.at n=20A078214
• a(n) = A078213(n)/n.at n=12A078214
• a(n) = A078213(n)/n.at n=36A078214
• a(n) = A078213(n)/n.at n=13A078214
• First prime in the progression (n!+m)/m.at n=35A089132
• Smallest prime obtained as k*n! concatenated with a 1 for some k.at n=7A089766
• Primes of the form 8*n^2 + 4*n + 1.at n=35A102130
• Primes p such that p-1 has more divisors than any smaller prime-1.at n=24A103199
• Triangle, read by rows, T(n, k) = T(n, k-1) + (k+1)*n!, T(n, 0) = 1.at n=33A105064