[QUOTE=Flatlander;257793]Now I just need a mnemonic to help me spell mnemonic correctly first time.[/QUOTE]

[B]M[/B]ersenne [B]N[/B]umbers [B]E[/B]nsure [B]M[/B]ost [B]O[/B]ften [B]N[/B]aturally [B]I[/B]nteresting [B]C[/B]onversations

[B]M[/B]ersenne [B]N[/B]umber [B]E[/B]nthusiasts [B]M[/B]ust [B]O[/B]ften [B]N[/B]avigate [B]I[/B]nextricable [B]C[/B]omputations

[B]M[/B]ersenne [B]N[/B]umbers [B]E[/B]ntail [B]M[/B]any [B]O[/B]stensible [B]N[/B]efarious [B]I[/B]nternet [B]C[/B]omputations

[QUOTE=ATH;257842][B]M[/B]ersenne [B]N[/B]umbers [B]E[/B]nsure [B]M[/B]ost [B]O[/B]ften [B]N[/B]aturally [B]I[/B]nteresting [B]C[/B]onversations

[B]M[/B]ersenne [B]N[/B]umber [B]E[/B]nthusiasts [B]M[/B]ust [B]O[/B]ften [B]N[/B]avigate [B]I[/B]nextricable [B]C[/B]omputations

[B]M[/B]ersenne [B]N[/B]umbers [B]E[/B]ntail [B]M[/B]any [B]O[/B]stensible [B]N[/B]efarious [B]I[/B]nternet [B]C[/B]omputations[/QUOTE]

"Mersenne numbers ensure most naturally
number enthusiasts must navigate
entail many nefarious"

Many enthusiasts random sieve [B]entail[/B] numbers naturally [COLOR="red"][I]ensure[/I][/COLOR]

Many enthusiasts real sieve [COLOR="Red"][I]ensure[/I][/COLOR] numbers naturally [B]entail[/B]



( ex - changes ) exchanges

[QUOTE=Uncwilly;257804]I never heard the slow dancing part. And generally it was horseshoes then hand grenades.[/QUOTE]

and nuclear warheads

Not a rhyme or mnemonic, but related. To remember log[SUB]10[/SUB](2), memorize

F[SUB]12[/SUB] has 1234 digits.

The leading digits are 1044... so 2^4096 is pretty close to 10^1233, and 1233/4096 gives you the logarithm with relative error ~1.5e-5.

Comments about previous posts, followed by one I learned from my amateur-astronomer father growing up -

- Spanish for key is "Clave" (not Llave) - Think 'clavicle", literally the 'key bone' due to its shape similar to an old-fashioned bent-wire key. (In English that connection has been lost, but e.g. in German it`s called key-ishly "Schlüsselbein")

- The resistor-color one could be made a bit more inoffensive by replacing "rape" with "ravish".

- The bit about "hand grenades" used to confuse me ... I always the thought the point of hand grenades was to be able to do major damage (especially to concealed targets not reachable by gunfire) *without* having to get terribly close. Thankfully some explained that the reference was to the hand grenade only having to go off near someone to have its desired effect.

[QUOTE=akruppa;257875]Not a rhyme or mnemonic, but related. To remember log[SUB]10[/SUB](2), memorize

F[SUB]12[/SUB] has 1234 digits.

The leading digits are 1044... so 2^4096 is pretty close to 10^1233, and 1233/4096 gives you the logarithm with relative error ~1.5e-5.[/QUOTE]

Cute, but simply remembering the 5-digit palindrome "30103" (especially easy for U.S. residents, since it has the same format as U.S. postal codes) gives accuracy 1000 times better.

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The astronomical mnemonic I learned from my Dad is the one commonly used to encode the stellar classifications of the famous [url=http://en.wikipedia.org/wiki/Hertzsprung%E2%80%93Russell_diagram]Hertzsprung–Russell diagram[/url] (which is to stars much like the periodic table is to chemistry):

"Oh Be A Fine Girl, Kiss Me"

[There were also several off-main-branch stellar types which were remembered via the extended version

"Oh Be A Fine Girl, Kiss Me Right Now Sweetheart".

[QUOTE=ewmayer;258311]Cute, but simply remembering the 5-digit palindrome "30103" (especially easy for U.S. residents, since it has the same format as U.S. postal codes) gives accuracy 1000 times better.[/QUOTE]Something I first memorized decades ago, despite not having the benefit (?)of being a U.S. resident.

Paul

[quote=xilman;258324] ... the benefit (!)of being a U.S. resident.
[/quote]

Couldn't resist the minor alteration.

But Hail Britania, Britania rules the waves !

[QUOTE=davar55;258326]Couldn't resist the minor alteration.

But Hail Britania, Britania rules the waves ![/QUOTE]Couldn't resist the minor alteration.

Rule Britannia, Britannia rules the waves.

[quote]Couldn't resist the minor alteration.

Rule Brittania. Brittania rules the waves.[/quote]

Oh hail, a lex error and a d*mn double typo.
Are you absolutely sure two t's? I guess
someone proud of being British would know
how to spell Britain. Or maybe my error was
just an Americanization? The are no double
letters in the United States of America.
Well, maybe in Massachusetts and Connecticut.

Rule Britannia, the Sun Never Sweats, and all that.

Just remembered a German one I learnt as a wee lad forced into violin lessons: The strings on a violin have basic tones G,D,A,E, the German mnemonic used to make that easy to remember is "Geh, Du Alter Esel". (Go, you old donkey).

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[i]
("Go, you old ass" sounds a little too much like a solicitation for geriatric naughtiness ... not that there`s anything wrong with that, it could be considered "ribaldry with a new wrinkle")[/i]

[QUOTE=ewmayer;258311]
"Oh Be A Fine Girl, Kiss Me"

[There were also several off-main-branch stellar types which were remembered via the extended version

"Oh Be A Fine Girl, Kiss Me Right Now Sweetheart".[/QUOTE]
Previously dealt with.
[QUOTE=Uncwilly;257823][url]http://www.mersenneforum.org/showthread.php?t=14245[/url][/QUOTE]