20327

Properties

Appears in sequences

• Primes p from A031924 such that A052180(primepi(p)) = 29.at n=12A052236
• Primes p such that (p-1)/2 and (p-3)/4 are also prime.at n=28A066179
• Primes congruent to 31 mod 59.at n=38A142758
• Primes congruent to 14 mod 61.at n=36A142812
• Prime numbers where the last digit is the sum of all the previous digits.at n=29A156617
• a(n) = 42*n^2 - 1.at n=21A158626
• The smallest prime q > p = prime(n) such that p*(q-p)+q, p*(q-p)-q, q*(q-p)+p and q*(q-p)-p are simultaneously prime, or 0 if no such q exists.at n=53A180481
• Least Ramanujan prime having a gap of 2n to the previous Ramanujan prime.at n=46A182875
• Primes p of the form p = prime(n) + prime(n+1) - 5 and p = prime(k) + prime(k+1) + 5.at n=39A207992
• Non-palindromic balanced primes in base 16.at n=23A256090
• Least prime p such that pi(p*n) = prime(q*n) for some prime q, where pi(x) denotes the number of primes not exceeding x.at n=38A260197
• a(n) is the smallest prime having exactly n consecutive primitive roots.at n=18A261438
• Sum of the third largest parts of the partitions of n into 9 squarefree parts.at n=53A326530
• Number of broken 1-diamond partitions of n.at n=16A328539
• Primes having only {0, 2, 3, 7} as digits.at n=45A386044
• Smallest prime p for which there are exactly n smaller primes q such that p - q is a perfect square.at n=42A386603
• Prime numbersat n=2295