42209
domain: N
Properties
Primality
- Prime
- yes
Appears in sequences
- Primes p such that 1 + product of primes up to p is prime.at n=18A005234
- Class 7- primes.at n=27A081426
- Primes from merging of 5 successive digits in decimal expansion of exp(2).at n=17A105001
- Primes in the sequence A003294 of certain fourth powers bases.at n=30A134820
- Primes of form a^2+b^2 such that a^4+b^4 and a^8+b^8 are primes.at n=27A182313
- Number of 2 X 2 matrices having all terms in {1,...,n} and nonnegative determinant.at n=16A211058
- Prime(n), where n is such that (Sum_{i=1..n} prime(i)^19) / n is an integer.at n=8A233767
- Primes which are the average of the two adjacent primes and also of the two adjacent squarefree numbers.at n=30A245589
- Prime numbers such that, in base 10, all their proper prefixes and suffixes represent composites.at n=33A254754
- Growth series for affine Coxeter group B_4.at n=41A267167
- Largest prime factor of 78557*2^n + 1.at n=26A279798
- Balanced primes of order one ending in 9.at n=15A303095
- Primes that can be constructed by concatenating two squares >= 4.at n=34A345314
- Primes having only {0, 2, 4, 9} as digits.at n=39A386048
- Prime numbersat n=4413