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In mathematics, an integer sequence prime is a prime number found as a member of an integer sequence. For example, the 8th Delannoy number, 265729, is prime. A challenge in empirical mathematics is to identify large prime values in rapidly growing sequences. A common subclass of integer sequence primes are constant primes, formed by taking a constant real number and considering prefixes of its decimal representation, omitting the decimal point. For example, the first 6 decimal digits of the constant ''π'', approximately 3.14159265, form the prime number 314159, which is therefore known as a pi-prime. Similarly, a constant prime based on ''e'' is called an e-prime. Other examples of integer sequence primes include: * Cullen prime – a prime that appears in the sequence of Cullen numbers * Factorial prime – a prime that appears in either of the sequences or * Fermat prime – a prime that appears in the sequence of Fermat numbers * Fibonacci prime – a prime that appears in the sequence of Fibonacci numbers. * Lucas prime – a prime that appears in the Lucas numbers. * Mersenne prime – a prime that appears in the sequence of Mersenne numbers * Primorial prime – a prime that appears in either of the sequences or * Pythagorean prime – a prime that appears in the sequence * Woodall prime – a prime that appears in the sequence of Woodall numbers The On-Line Encyclopedia of Integer Sequences includes many sequences corresponding to the prime subsequences of well-known sequences, for example A001605 for Fibonacci numbers that are prime. == References == * * * * 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「integer sequence prime」の詳細全文を読む スポンサード リンク
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