115151

Properties

Appears in sequences

• a(n) = floor(binomial(n,5)/5).at n=39A011851
• Primes that contain digits 1 and 5 only.at n=12A020453
• Smallest n-digit prime containing only digits 1 and 5, or 0 if no such prime exists.at n=5A036932
• Concatenate (1,n,n,1).at n=15A100846
• Primes of the concatenated form 1nn1 where n is an integer >=0.at n=2A102497
• Smallest prime p with at least two non-overlapping occurrences of n in decimal representation of p.at n=14A103611
• Lesser of twin primes p1 such that p1*p2+-6 are prime numbers.at n=31A174955
• Primes having only {0, 1, 5} as digits.at n=39A199325
• Primes p with p + 2, prime(p) + 2 and prime(prime(p)) + 2 all prime.at n=16A236481
• Primes p such that sum and product of decimal digits of p are both semiprimes.at n=26A245381
• Primes having only {1, 4, 5} as digits.at n=34A260268
• Primes such that the decimal digits in the first half of the number are a nontrivial permutation of the digits in the second half.at n=3A297994
• Primes having only {1, 5, 6} as digits.at n=36A385779
• Primes having only {1, 5, 8} as digits.at n=33A385780
• Prime numbersat n=10885