180001

Properties

Appears in sequences

• Smallest prime containing n-th cube as substring.at n=20A029949
• Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 56.at n=5A031644
• Let (p1,p2), (p3,p4) be pairs of twin primes with p1*p2=p3+p4-1; sequence gives values of p4.at n=4A047979
• Primes having only {0, 1, 8} as digits.at n=32A061247
• Sum of all the decimal digits of numbers from 1 to 10^n.at n=3A078427
• Smallest prime with "n^3" as central digit(s).at n=20A084430
• Primes of the form 8*k^2 + 1.at n=17A090685
• Indices of records in A109631.at n=41A109640
• Larger member of twin prime pairs whose sum is a square.at n=17A118593
• Smallest prime p which is a concatenation of n^3 and the cubic digits 0, 1, 8.at n=19A174979
• Primes consisting of all of the cube digits (i.e., 0, 1 and 8) at least once.at n=19A180685
• Twin prime pairs which sum to perfect squares.at n=35A232878
• Number k such that k^2 + 1 = p*q*r where p,q,r are distinct primes and the sum p+q+r is a perfect square.at n=31A261529
• Primes prime(k) such that 2*(prime(k)^2 - prime(k-1)^2) is a perfect square.at n=39A335410
• Numbers k such that d(k) < d(k+1) < d(k+2) < d(k+3) < d(k+4), where d(n) is the number of divisors of n.at n=29A364717
• Numbers m such that m^m == m (mod 10^(len(m) + 2)), where len(m) is the number of digits of m (A055642).at n=36A373206
• Primes containing 000 as a substring.at n=20A386247
• Prime numbersat n=16343