34259

Properties

Appears in sequences

• n is prime and is the concatenation of numbers n_1, n_2, n_3, in that order, with n_1 - n_2 = n_3. (Do not allow leading zeros for nonzero n_i.)at n=30A067861
• a(n) is the n-th prime whose decimal expansion begins with the decimal expansion of n.at n=33A077345
• Initial term in sequence of four consecutive primes separated by 3 consecutive differences each <=6 (i.e., when d=2,4 or 6) and forming d-pattern=[2, 6,6]; short d-string notation of pattern = [266].at n=13A078849
• Class 7- primes.at n=17A081426
• Largest of six consecutive primes the sum of the digits of each of which is prime.at n=25A106720
• Largest of seven consecutive primes whose sum of digits is prime.at n=10A106721
• Primes p such that both pi(p) and the concatenation of pi(p) and p are prime, where pi is the prime counting function.at n=45A155032
• Number of Fermat pseudoprimes to base 3 less than 2^n.at n=35A185084
• Primes p with same last two digits as k, where prime(k) = p.at n=36A232102
• Primes p = prime(n): such that p.n and n.p both are prime, where (.) indicates concatenation.at n=39A243886
• Lesser of twin prime pairs of the form (40n - 21, 40n - 19).at n=43A250025
• Number of integer partitions of n whose negated run-lengths are unimodal.at n=44A332638
• Prime numbersat n=3659