497503

Appears in sequences

• Odd composites with increasing proportion of nontrivial non-witnesses of compositeness by the Miller-Rabin primality test.at n=14A090659
• Records in A111273.at n=24A113732
• Numbers of the form p*q, p and q prime with q=2*p-1.at n=20A129521
• Overpseudoprimes to base 3.at n=29A141350
• Odd numbers with increasing numbers of bases to which they are strong pseudoprimes.at n=26A141768
• Triangular numbers which are sums of 5 consecutive primes.at n=21A173421
• Odd non-Carmichael numbers with increasing numbers of bases to which they are pseudoprimes.at n=37A194946
• Fermat pseudoprimes n to base 3 for which sqrt(8*n + 1) is an integer.at n=29A217841
• Squarefree numbers (from A005117) with prime divisors in a 2p-1 progression.at n=22A231814
• Record values in A265388.at n=23A265395
• Odd numbers > 1, not powers of primes, for which A326147(n) is equal to abs(A326146(n)).at n=28A326148
• Odd composite numbers k for which the number of witnesses for strong pseudoprimality of k equals phi(k)/4, where phi is the Euler totient function (A000010).at n=15A329759
• Record values in A346599.at n=26A346601
• Triangular numbers that are emirpimes.at n=16A375385
• Composite numbers k == 5, 7 (mod 12) such that 3^((k-1)/2) == -1 (mod k).at n=23A375918