166667

Properties

Appears in sequences

• Primes that when squared gives numbers with digits in nondecreasing order.at n=16A028865
• Smallest prime containing exactly n 6's.at n=4A037065
• Find smallest pair (x,y) such that x^2-y^2 = 11...1 (n times) = (10^n-1)/9; sequence gives value of y.at n=8A048612
• Numbers m that divide the concatenation of m+1 and m+2.at n=18A069860
• Numbers k with the property that k divides one of the concatenations (k-1)(k-2) or (k-2)(k-1).at n=22A077292
• Smaller member of a twin prime pair with a triangular sum.at n=25A086816
• Centered hexamorphic numbers: the k-th centered hexagonal number, 3k(k-1)+1, ends in k.at n=24A094534
• Numbers n such that n + phi(n) is a repdigit.at n=19A116018
• a(n) = (5*10^n + 1)/3.at n=5A126109
• Beastly primes (version 2): primes containing 666 as a substring.at n=29A131645
• Integers n such that digits in n and n^2 are in nondecreasing order.at n=41A234841
• Terms of A161897 that are not in A005385.at n=4A284660
• Pseudo-safe-primes: numbers n = 2m+1 with 2^m congruent to n+1 or 3n-1 modulo m*n, but m composite.at n=10A300193
• Number of successive occurrences of the same first digits in A366585.at n=54A366610
• Array read by rows: T(n,k) is the first prime with exactly n occurrences of decimal digit k.at n=46A375760
• Numbers k such that k*(k-1) is composed of exactly two different decimal digits.at n=34A380974
• Primes p such that p*(p-1) consists of exactly two different decimal digits.at n=8A380984
• Prime numbersat n=15226