51551

Properties

Appears in sequences

• Primes that contain digits 1 and 5 only.at n=10A020453
• Primes that remain prime through 3 iterations of function f(x) = 8x + 3.at n=16A023292
• Every prefix prime in base 6 (written in base 6).at n=29A024766
• Primes which can be expressed as concatenation of powers of 5 and 0's.at n=30A066596
• Prime values of Lehmer's polynomial 263*x^2+3.at n=2A094319
• Balanced primes of order ten.at n=23A096702
• a(n) = A108462(A025487(n)).at n=23A108463
• Primes having only {0, 1, 5} as digits.at n=25A199325
• Balanced primes which are the average of two successive semiprimes.at n=28A212820
• Numbers n that have record value of prime p such that p + 2n is another prime.at n=17A239392
• Primes having only {1, 4, 5} as digits.at n=26A260268
• Primes having only {1, 5, 7} as digits.at n=42A260828
• Number of nX4 0..1 arrays with every element equal to 1, 2, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.at n=9A300765
• Positions of records in A204911.at n=22A317249
• Primes p such that Sum_{k=PreviousPrime(p)..p} d(k) = Sum_{k=p..NextPrime(p)} d(k), where d(k) is the number of divisors function A000005.at n=38A353552
• 2*a(n) = m is the least even number m such that all sums m + prime(k), k=1..n are composite.at n=48A370998
• Primes having only {1, 2, 5} as digits.at n=34A385773
• Primes having only {1, 5, 6} as digits.at n=23A385779
• Primes having only {1, 5, 8} as digits.at n=23A385780
• Primes having only {1, 5, 9} as digits.at n=41A385781