104659

Properties

Appears in sequences

• Least primes p1 such that gap between p1 and p2=nextprime(p1) contains no semiprimes. Gap is 1 for n=0 (first term) and 2n for n=1..30.at n=9A136344
• Primes of the form k^4 - k^2 + 7.at n=7A267378
• Lower ends of record gaps between numbers that are either primes or semiprimes.at n=9A275013
• Least number that is the start of a prime-semiprime gap of size n.at n=17A278351
• Prime numbersat n=9990