18869

Properties

Appears in sequences

• Convolution of natural numbers with composite numbers.at n=39A023539
• Consider all integer triples (i,j,k), j,k>0, with i^3=j^3+binomial(k+2,3), ordered by increasing i; sequence gives i values.at n=21A054234
• Smallest primes whose residue modulo its difference from the next prime is 2n-1.at n=14A060235
• Irregular primes with irregularity index three.at n=30A060975
• Smallest prime p of two consecutive primes, p < q, such that gcd(p+1, q+1) = 2n.at n=14A067604
• Primes associated with groups in A076077.at n=30A076076
• Primes p = prime(i) such that p(i)# - p(i+1) is prime.at n=17A093078
• Primes with digit sum = 32.at n=10A106768
• prime(k) for those k where floor((2*(prime(k+1)-prime(k))*PrimePi(k) mod (8*k))/k) = m with m = 9.at n=23A109563
• Primes p such that q-p = 30, where q is the next prime after p.at n=21A124596
• Father primes of order 8.at n=29A136077
• Primes congruent to 20 mod 61.at n=31A142818
• Primes congruent to 35 mod 73.at n=28A154628
• Numbers k such that k^2 + 1 == 0 (mod 41^2).at n=22A157116
• Primes p such that p plus or minus the sum of the fourth powers of its digits is a prime in both cases.at n=26A179595
• Primes of the form p^2+100, where p is prime.at n=17A182476
• Fajtlowicz p-primes.at n=30A185955
• Primes which are the sum of two numbers of the form k*(k+1)^2/2.at n=38A210646
• Primes congruent to 1 mod 53.at n=38A212377
• Primes that are arithmetical average of 100 consecutive primes.at n=8A217985