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Sexy prime
In mathematics, sexy primes are prime numbers that differ from each other by six. For example, the numbers 5 and 11 are both sexy primes, because they differ by 6. If ''p'' + 2 or ''p'' + 4 (where ''p'' is the lower prime) is also prime, then the sexy prime is part of a prime triplet.
The term "sexy prime" stems from the Latin word for six: ''sex''.
== n# notation ==
As used in this article, ''n''# stands for the product 2 · 3 · 5 · 7 · … of all the primes ≤ ''n''.
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「Sexy prime」の詳細全文を読む
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