33333331

Properties

Appears in sequences

• n 3's followed by 1.at n=7A033175
• Except for initial term, primes of form "n 3's followed by 1".at n=7A051200
• Smallest prime beginning with exactly n 3's.at n=7A065586
• Smallest prime starting with n 3s.at n=7A068104
• Primes arising in A086920, or 0 if A086920(n) = 0.at n=6A086923
• Primes of the form identical odd digits followed by a 1.at n=11A089346
• Primes of the form identical digits followed by a 1.at n=18A089347
• a={1,3,7,9} a1={1,3,7,9,0} b[n]=Flatten[Table[10*Sum[10^m*a1[[1+Mod[n,5]]],{m,0,n}]+a,{n,0,digits}]]; a[m]=if b[n] is prime then b[n].at n=9A089690
• Primes of the form aaaa...aa1 where a is 1, 2, 3, 4 or 5.at n=10A109548
• Primes of the form aaaa...aa1 where a is 3, 4, 5, 6 or 7.at n=12A109550
• Prime numbers of the form (10^n - 7)/3.at n=6A123568
• Largest prime factor of odd composites less than 10^n.at n=7A136024
• Irregular triangle, read by rows, of primes with suffix n and digits "3" prepended , otherwise 0.at n=6A186071
• Irregular triangle, read by rows, of primes with suffix n and digits "3" prepended , otherwise 0.at n=43A186071
• Near-repdigit primes that are also deletable primes.at n=46A187867
• 7-white numbers: partition digits of n^7 into blocks of 7 starting at right; sum of these 7-digit numbers equals n.at n=27A274834
• Single-digit odd primes and primes whose decimal expansion has the form iii...ij, where i and j are distinct odd digits.at n=38A321363
• Near-repdigit primes with at least two 3's as the repeated digit.at n=7A365596
• Prime numbersat n=2050943