35899

Properties

Appears in sequences

• Numbers k such that 21*2^k - 1 is prime.at n=27A002238
• Alternating factorials: n! - (n-1)! + (n-2)! - ... 1!.at n=8A005165
• Primes base 10 that remain primes in six bases b, 2<=b<=10, expansions interpreted as decimal numbers.at n=11A052028
• Primes p such that p, p+12, p+24 are consecutive primes.at n=35A052188
• Prime number spiral (clockwise, East spoke).at n=31A054555
• Numbers k such that 50^k - 49^k is a prime.at n=6A062616
• Primes of the form Sum_{i=1..k} (-1)^(k-i)*i!.at n=5A071828
• Primes with digit sum = 34.at n=10A106769
• a(0) = 0, a(1) = a(2) = 1, a(3) = 2, a(4) = 4, for n>3: a(n+1) = SORT[ a(n) + a(n-1) + a(n-2) + a(n-3) + a(n-4)], where SORT places digits in ascending order and deletes 0's.at n=34A108565
• Primes in the sequence f(n) = f(n-1)+((-1)^n)*n!, with f(0)=0.at n=2A119555
• Primes whose binary and ternary representations are also prime when read in decimal.at n=37A236537
• Numbers k such that 3*R_(k+2) - 2*10^k is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=20A256326
• Number of n X 3 0..1 arrays with every element unequal to 0, 1, 2, 3 or 7 king-move adjacent elements, with upper left element zero.at n=11A304770
• Primes p such that (p^128 + 1)/2 is prime.at n=23A341230
• a(n) is the least prime factor of the alternating factorial n! - (n-1)! + (n-2)! - ... 1! for n > 2; a(1) = a(2) = 1.at n=7A359808
• a(n) is the number of primes between (prime(n))^3 and (prime(n+1))^3.at n=39A365767
• Prime numbersat n=3814