Whether or not 1 is prime is a question of definitions.
While I admit that it makes more sense to me to say that
1 is not a prime, there is certainly not universal agreement
on it. In particular (as I discovered when I took some
advanced number theory courses) a number of the people who
undertook to compute long lists of primes started their
lists with 1. After a while you learn not to be too
dogmatic about it. (Though I have to say that there is
far more agreement that 1 is not prime than there is on,
say, whether 0 is a natural number.)
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
Read Where should I post X? if you're not absolutely sure you're posting in the right place.
Please read these before you post! —
Posts may use any of the Perl Monks Approved HTML tags:
You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
- a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.
| & || & |
| < || < |
| > || > |
| [ || [ |
| ] || ] ||