25733

Properties

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has period 79.at n=16A020418
• Primes that remain prime through 3 iterations of function f(x) = 2x + 7.at n=20A023275
• Primes that remain prime through 4 iterations of function f(x) = 2x + 7.at n=6A023305
• Primes that remain prime through 4 iterations of function f(x) = 9x + 2.at n=17A023324
• Numerators of continued fraction convergents to sqrt(478).at n=7A041912
• Prime-indexed primes (PIPs) whose digits are all primes.at n=10A087368
• Array T(n,k) read by antidiagonals: expansion of exp(x+y)/(1-xy).at n=70A099597
• Array T(n,k) read by antidiagonals: expansion of exp(x+y)/(1-xy).at n=73A099597
• Primes with at least one of each prime digit.at n=17A108419
• Primes with prime number of only prime digits (i.e., 2, 3, 5, 7).at n=39A124888
• Primes with a prime number of digits and using all of the prime digits 2, 3, 5, 7 at least once and no other digits.at n=9A153770
• Primes p such that 3*p+2, 5*p+4 and 7*p+6 are also prime.at n=26A173876
• Numbers k such that 10^k-2*k-1 is prime.at n=11A174177
• Number of (w,x,y,z) with all terms in {1,...,n} and 2*w*x>=3*y*z.at n=16A211923
• a(n) = floor(n!^2 / n^n).at n=11A215460
• a(n) = Sum_{i=0..n} digsum_5(i)^4, where digsum_5(i) = A053824(i).at n=41A231671
• Primes p with same last two digits as k, where prime(k) = p.at n=29A232102
• Primes p such that p+8, p+86, p+864 are prime.at n=21A236302
• Numbers k such that k!3 - 3^2 is prime, where k!3 = k!!! is a triple factorial number (A007661).at n=38A243078
• Primes p such that q = p^2 + 10 and q^2 + 10 are also prime.at n=29A243368