19441

Properties

Appears in sequences

• Cuban primes: primes which are the difference of two consecutive cubes.at n=34A002407
• Primes that remain prime through 4 iterations of function f(x) = 10x + 3.at n=6A023328
• Primes arising in A046966.at n=6A046972
• Primes arising in A048969.at n=31A048977
• Primes p for which the period of reciprocal 1/p is (p-1)/12.at n=23A056217
• Primes p such that the greatest prime divisor of p-1 is 5.at n=38A061599
• Numbers n such that n+0, n+1, n+2, n+3 and n+4 are, in some order, 1 * a prime, 2 * a prime, 3 * a prime, 4 * a prime and 5 * a prime.at n=4A071367
• a(n) is the smallest number m such that (m+k-1)/k is prime for k=1,2,...,n.at n=4A093553
• Triangle, read by rows, T(n, k) = T(n, k-1) + (k+1)*n!, T(n, 0) = 1.at n=27A105064
• Primes in the triangle defined by T(0,c)=1, T(1,c)=c, T(r,1)=1 and T(r,c) = T(r,c-1) + c*(r-1)!.at n=10A105071
• Numbers n such that n and its digit reversal R(n) both are difference of positive cubes.at n=23A109879
• Numbers k such that k and its digit reversal both are difference of successive cubes.at n=8A109880
• Primes of the form 2^a * 3^b * 5^c + 1 for positive a, b, c.at n=29A114991
• Largest number k such that k^2 divides A007781(6n+1).at n=39A127854
• Hex (or centered hexagonal) numbers that are prime powers of the form (6n+1)^k.at n=35A133323
• Prime numbers p such that p +- ((p-1)/8) are primes.at n=12A137771
• Primes of the form x^2 + 1848*y^2.at n=53A139668
• Primes congruent to 30 mod 59.at n=38A142757
• Primes congruent to 43 mod 61.at n=34A142841
• Primes arising in A144728.at n=5A144729