81929

Properties

Appears in sequences

• Primes whose consecutive digits differ by 7 or 8.at n=19A048419
• Primes that can be formed by concatenating 2^a and 3^b.at n=35A068801
• Smallest prime larger than 2^n whose digits begin with those of 2^n.at n=13A068842
• Primes p such that p+2, 2p+1, and 2p+3 are also prime.at n=26A069142
• 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=24A078849
• Lower twin primes with lower twin prime index.at n=36A088460
• Let p run through the primes; write p in base 10 and then interpret it in base 128 getting a number q; if q is prime then adjoin q to the sequence.at n=23A090718
• Primes of the form 5n^2 + 9.at n=19A201487
• Number of partitions p of n such that (number of distinct parts of p) < max(p) - min(p).at n=45A239954
• Numbers n such that n is a twin prime and 2n + 1 is a twin prime.at n=27A261463
• Initial member of four twin prime pairs with gap 210 between them.at n=5A261701
• Primes of the form (2^a+1)*(3^b+1)-1 with a, b >= 0.at n=30A349638
• Primes p such that p + q +- 1 and p^3 + q^3 +- 1 are twin prime pairs, where q = nextprime(p).at n=11A366644
• Prime numbersat n=8010