90749

Properties

Appears in sequences

• Chen primes p such that their p + 2 counterpart is a Sarrus number (pseudoprime to base 2).at n=10A109994
• Emirps starting and ending with composite digit 9.at n=15A128374
• Primes p such that q - p = 38, where q is the next prime after p.at n=17A134118
• Triangle T(n,r), read by rows, where the r-th column is expansion of A(x)^r, with A(x) = x * (x+1) * (2*x^4+4*x^3-2*x+1) * (x^4+2*x^3-x+1) / (x^2+x-1)^6.at n=49A187055
• Lesser of pseudo twin primes to base 2.at n=38A192297
• Smallest prime k such that sigma(k - m) = sigma(k + m) has exactly n solutions, where m > 0 and sigma is A000203.at n=15A249690
• Primes 10k + 9 preceding the maximal gaps in A269261.at n=9A269262
• Numbers k such that (47^k - 4^k)/43 is prime.at n=4A392056
• Prime numbersat n=8782