42929

Properties

Appears in sequences

• Primes of the form x^2 + (x+3)^2.at n=33A076727
• Primes in which odd positioned digits are composite and even positioned digits are primes. The least significant digit is the taken to be the first digit.at n=29A083821
• Primes p such that p-1 and p+1 are both divisible by fourth powers.at n=25A086709
• Primes p2 such that p1^3 + p2^2 is an average of twin primes and p1 < p2 are consecutive primes.at n=26A138755
• Primes in A105720.at n=9A166619
• Nonpalindromic primes that are the average of the members of emirp pairs.at n=22A178585
• Primes that are the average of the members of more than one emirp pair.at n=7A178587
• Primes prime(k) such that 2^(k+1) - prime(k) is also prime.at n=11A227126
• Duplicate of A227126.at n=11A244914
• Primes p such that A001175(p) = (p-1)/8.at n=15A308793
• Numbers k such that 8k+1, 12k+1 and 24k+1 are primes and the last two are also of the form x^2 + 27y^2, so the tetrahedral number T(24k+1) is a Fermat pseudoprime to base 2.at n=28A321867
• Primes of the form (p^2 + 9)/2 where p is prime.at n=16A347530
• Primes having only {2, 4, 9} as digits.at n=17A385785
• Primes having only {2, 4, 5, 9} as digits.at n=31A386154
• Primes having only {2, 4, 8, 9} as digits.at n=36A386159
• Prime numbersat n=4487