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I Am Fascinated By Prime Numbers

Personal Stories, Advice, and Support 220 People

    Left Trunctable Primes

    As a counterpoint to my story "Right Trunctable Primes", the curious will be satisfied to know there ARE Left Trunctable Primes as well, which are prime numbers that remain prime when the leading digit is removed successively. Here are some: 2, 3, 5, 7, 13, 17, 23, 37, 43, 47, 53...
    freeed freeed 61-65, M 2 Responses Jan 4, 2012

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    Right Trunctable Primes

    These are strange primes in that, if you successively remove the right-most digit another prime results, BUT even stranger is that if you coninue to do this, every "new [smaller]" number will also be prime. Here's an example: 3797  379   37    3...
    freeed freeed 61-65, M 4 Responses Apr 18, 2010

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    Why I Love Prime Numbers

    I didn’t always like prime numbers. For Pete’s sake, dividing by 2 is always easier… and 10 is a fabulous number if you’re doing any arithmetical work. I discovered the beauty of prime numbers totally by accident. I inadvertently set a timer for 59 minutes. It just...
    fishsweeper fishsweeper 51-55, F 4 Responses Aug 24, 2012

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    Does 1910194 Mean Anything To You?

    It appears in the book Japa Yoga by Svami Sivananda and I always wondered what its significance is - the book's context isn't explicit. It would have been cooler if it were 1910191. Neither of these 2 are prime numbers, however. FYI the next smaller number which is prime is...
    freeed freeed 61-65, M 1 Response Apr 16, 2011

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    Anyone Else Solve That Google Riddle To Find The First 10 Digit Prime In E?

    If so, how? I hacked my way through it using microsoft excel (cause I'm not a coder) took a few hours but very fun! http://www.npr.org/templates/story/story.php?storyId=3916173
    dlmolicares dlmolicares 36-40 2 Responses May 4, 2012

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    Prime Numbers

    Sieve_of_Eratosthenes_animation.gif‎ (445 × 369 pixels, file size: 154 KB, MIME type: image/gif, looped, 159 frames, 37s)
    WilliamC WilliamC 61-65, M 3 Responses Jan 2, 2012

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    The Only 'even' Number That I Like Is 2

    I don't know how I got into the 'prime number thing', but now, when I set my microwave oven or dryer for time, it has to be a prime number. I'm not totally obsessed with prime numbers...they can just be odd numbers; but even number drive me nuts... with the exception of 2, which...
    fishsweeper fishsweeper 51-55, F Apr 23, 2012

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    73, The Best Number

    My guess is that this has already been posted, but it is a tribute to New Chrissy, nevertheless73 is the best number because:It is the 21st prime number;Its product is 21 (7X3=21);37 is its inverse, which is the 12 prime number12 is the inverse of 21.Dr. Sheldon CooperThis is the...
    Ramrodd Ramrodd 61-65, M Jan 8, 2013

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    All you Prime Number freaks.

    .... What books on the Theory of Numbers have you people liked, from general interest, to textbooks and the like.....
    atenra11 atenra11 46-50, M 2 Responses Nov 4, 2014

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    I AM 177

    I happened on this group by 'accident' (although, in reality, there are really no accidents). Anyway, if I am permitted to join, that would make me no. 177 (another prime number). I am also writing this on Saturday, the seventh day of the week (yet another prime).
    leprechaunz leprechaunz 56-60, M Sep 20, 2013

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    I almost became a computer criminal at 17 years

    old because of a fascination with prime numbers. I had just read Rivest Shamir and Adlemans article in the 1979 issue of Scientic American on Nondeterministic Polynomail Time Problems. In it they detail the workings of public key cryptosystems, that are used in your browser...
    deleted deleted 26-30 1 Response Jan 9, 2014

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    Is 2,904,897 A Prime Number?

    This little trick may win a bar bet someday and it's inexplicable on the surface, so is cool just for that. Well, it's not EVEN, so isn't a multiple of 2, doesn't end in 5, so isn't divisible by 5, but that leaves a lot of ground. In case you forgot, you only have to divide a...
    freeed freeed 61-65, M 10 Responses May 26, 2010

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    Ahhh The Number 13, It Always Fascinates Me..

    I love the number 13 as much as people hate it, along with the number 17, wherever i go i use the number 13 in whatever thing i do!!
    brokenwings13 brokenwings13 22-25, M Apr 25, 2011

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    I Think That I Must Have Lost Some IQ Points!

    When I was a kid in both Junior-High and High School, I was tested, and my IQ scores were 165 and 185. I could figure out puzzles and riddles, decipher codes, analyze situations, size up people, and do a plethora of 'brainy' other stuff way back when. Later, I gave birth to 5...
    fishsweeper fishsweeper 51-55, F 5 Responses Apr 29, 2012

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    Is 59595 A Prime Number?

    No, silly, any number ending in 5 is divisible by 5. Why did this number come up? It's how many EP points I reached as of today and I've always thought "symmetrical numbers" are cool. BTW, is the number of EP points YOU have a prime number?
    freeed freeed 61-65, M Apr 16, 2011

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    Related Experiences

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    Grrrrr !!!! * right now I have steam coming off my ears ..... I truly am fascinated by stupidity .... This time it's me. Ok !! Before I crash for the night I remind myself to...
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    "Hey, that's not fair," complained the leader of one gang to the leader of the other. "Here we brought out 50 of our members, thinking this was going to be a real fight! And you...
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    I'm off all day today! Anybody wanna keep me company?
    biggunsatx biggunsatx 41-45, M 7 Responses Apr 23

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    I may change my mind but right now I think I am going to become a psychologist. So if anyone wants to get their head shrunk by an amateur shrinker, give me a buzz.
    gwenagain gwenagain 16-17, F 3 Responses Apr 23

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    time to get over this bullsh!t. I've gotta get going with my life. a month and a half of f*cking moping around is way to much time. I gotta step it up. im tired of my life. I dont...
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    Absolutely, I want to study it in college and become a psychologist. Human behavior has always interested me.. Probably because I know so little of what makes a human function the...
    whimsicalEternity whimsicalEternity 16-17, F 2 Responses Apr 24

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    hippiesugar hippiesugar 18-21, F 1 Response Apr 24

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    "It's not the size of the wave, it's the motion of the ocean." Well, what if the wave is really big AND moves right??
    biggunsatx biggunsatx 41-45, M 6 Responses Apr 24

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    So friend from far away. I don't understand if I wasn't blunt. I did utter words to help, but made sure you were aware what it defined. I've been attacked, so smiling let me make...
    Isis27 Isis27 36-40 1 Response Apr 24

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    "Too many women are being told to medicate away their essential, authentic selves" - Julie Holland, MD. I recently read an article in "O" magazine written by Beth Levine...
    SavannahAnsley SavannahAnsley 41-45, F 5 Responses Apr 25

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    I have a crush on Richard Ramirez lol
    russianangel russianangel 16-17, F Apr 25

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    Hey good lookin', what you got cookin'?
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    diegodlavega diegodlavega 46-50, M 9 Responses Apr 25

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    So, I found this test online, and took it. I found it to be pretty revealing and thought I'd share. Take it without cheating and you might learn a thing or two about yourself...
    lavendersea lavendersea 41-45, F 11 Responses Apr 25

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    Thing that seems difficult to understand can become less so if you look into them and try to understand. It's amazing what one can build at home with just their own tools.
    deleted deleted 26-30 Apr 25

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    Has it become acceptable for people to treat other's with no respect at all? Why do all the kind people in the world get hurt the most?? Day's i sit here and think what will the...
    2009R1 2009R1 36-40, M 5 Responses Apr 26

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    Some of us wade into the water and learn to swim right away. Some of us start to drowned and with a lil more effort and a belly full of water finally learn to swim. And some of us...
    WickedlilAngel WickedlilAngel 31-35, F 1 Response Apr 26

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    Do you love yourself? Do people struggle to accept themselves unconditionally as much as I do sometimes? I lost myself somewhere, and it started when I was young, when I...
    awakebuthalfasleep awakebuthalfasleep 41-45, M 3 Responses Apr 26

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    They say nothing really belongs to you. Well, I'm pretty sure those beer nuts I just ate are all mine, at least for a few hours.
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    It's not that I'm pro-drunk driving, but someone's gotta run out for burritos once nap time's over here at the daycare. Yummy!!
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