23887

Properties

Appears in sequences

• Number of permutations that are 2 "block reversals" away from 12...n.at n=17A007972
• Primes that remain prime through 3 iterations of function f(x) = 6x + 7.at n=18A023289
• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 74 ones.at n=35A031842
• Primes with multiplicative persistence value 6.at n=1A046506
• Numbers with multiplicative persistence value 6.at n=26A046515
• Primes p such that x^36 = 2 has no solution mod p, but x^12 = 2 has a solution mod p.at n=35A059668
• Primes that are a concatenation of 2, 3 and a prime.at n=29A101218
• a(n) = (n^5 - 133*n^4 + 6729*n^3 - 158379*n^2 + 1720294*n - 6823316)/4.at n=24A121887
• Number of partitions of n in which any two parts differ by at most 8.at n=44A218510
• Primes p such that 2*p + 1 is abundant.at n=28A267476
• Primes of the form abs((1/4)*(n^5 - 133n^4 + 6729n^3 - 158379n^2 + 1720294n - 6823316)) in order of increasing nonnegative n.at n=24A272710
• Numbers k such that F(k)*F(k+1) - F(k+2) is prime, where F = A000045.at n=42A305415
• Sum of the smallest parts in the partitions of n into 8 parts.at n=52A308990
• Prime powers that are equal to the sum of the first k prime powers (including 1) for some k.at n=13A364947
• Lesser of sexy happy primes.at n=31A387258
• Prime numbersat n=2657