213442

Appears in sequences

• Denominators of continued fraction convergents to (sqrt(37)-4)/3.at n=15A082975
• Even semiprimes of the form prime(n)*prime(n+1) - 1.at n=8A103533
• Product of twin primes minus 1.at n=23A120875
• Positive integers m such that none of the four consecutive numbers m, m+1, m+2, m+3 can be written as p^2 + q with p and q both prime.at n=40A258661
• Semiprimes which are the product of a twin prime pair minus one.at n=8A269663