203321

Properties

Appears in sequences

• Start of a string of exactly 3 consecutive (but disjoint) pairs of twin primes.at n=21A035791
• Lesser of the first pair of three successive prime pairs (no isolated primes occur in between). Least of the six successive primes which are member of prime pairs.at n=28A090953
• Primes made from cubes with every digit decreased by 1 and no carrying.at n=7A133588
• First of six consecutive primes that are three sets of twin primes.at n=27A136143
• Lesser of twin primes p1 such that p1^3 + p2^2 are average of twin primes. p1 and p2 twin primes, p1 < p2.at n=23A139778
• Primes of the form (p^2-2)/7, where p is also a prime number.at n=27A165668
• Primes of the form 2*n^3 + 4*n^2 + 4*n + 1.at n=19A195117
• Markoff spectrum N^(5)(Lambda).at n=39A293173
• Primes p such that p+2, p*(p+1)/2-2 and p*(p+1)/2+2 are also primes.at n=40A349336
• Positive integers k such that (k+1)^4 has a divisor congruent to -1 modulo k.at n=54A350916
• a(0) = 1, a(1) = 17, and a(n) = 23*a(n-1) - a(n-2) - 4 for n >= 2.at n=4A350926
• Prime numbersat n=18249