27779

Properties

Appears in sequences

• Number of integers <= 2^n of form x^2 - 2y^2.at n=17A000047
• Smallest number that takes n steps to reach 0 under "k->max product of 2 numbers whose concatenation is k".at n=22A035932
• Smallest number such that the largest set of positive real numbers whose sum and product equals the number falls short by n.at n=10A052508
• Primes with either no internal digits or all internal digits are 7.at n=47A069682
• Number of nonisomorphic ways a loop can cross a road (running East-West) 2n times.at n=8A077460
• Primes with digit sum = 32.at n=22A106768
• Sum of the first n n-digit primes less n*10^(n-1).at n=28A114053
• Numbers n such that f(n), f(n+1) and f(n+2) are prime, f(m)=72*m^2+7.at n=31A121089
• Primes containing 777 as a substring.at n=7A167282
• Numbers k such that (2^k - k)*2^k + 1 is prime.at n=16A200816
• Primes of the form 3n^3-4.at n=1A200848
• Primes of the form 7n^2 - 4.at n=7A201850
• Primes having only {2, 7, 9} as digits.at n=33A261182
• Number of odd singletons in all partitions of n (n>=0).at n=37A265257
• Number of subwords of the form UDD in nondecreasing Dyck paths of length 2n.at n=11A377670
• Prime numbersat n=3032