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Welcome to Prime Numbers Wiki!
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The encyclopedia of prime numbers, contributed by primers.
389 primes, 272 images and videos, and 8,407 edits since November 16, 2013
Featured User for July 2014

User:Dalek-James. He has contributed a lot in the past month. He is also the newest administrator here. Again, let's keep the honors going!

Question of the Day

Link to the question!

Hello!

New users: even if an answer is already seen in the comments section, still write your answer. The answers not written by me still might not be right.

For newcomers who are seeing this blog post for the first time, please read the rules to get started!

Achievements earned during the last question: 0

The Question of the Day

(1 point) If the sum of the digits of a positive two-digit integer is 15, what is the probability that one of the digits is 9? Express your answer as a common fraction.

(2 points) A right triangle has a hypotenuse of 26 units. If one leg is 4 more than twice the other, what is the sum of the lengths of the legs, in units?


Previous Solutions

N/A

Scoreboards

1. Blueeighthnote: 13811 points (2 achvmt pkgs) - One more to get the next lucky prime badge!

2. Minipop56: 12111 points - Four more to get the next lucky prime badge!

3. TimBluesWin: 755 points (1 achvmt pkg)

4. Imamadmad: 745 points (1 achvmt pkg)

5. Julianthewiki: 525 points (1 achvmt pkg) - RETIRED

6. Dalek-James: 373 points

7. Wikia Contributor 69.235...: 230 points (1 achvmt pkg)

8. Lefty7788: 300 points - One more to get the next lucky prime badge!

9. Supermario3459: 145 points (1 achvmt pkg)

10. ZombieBird4000: 50 points (1 achvmt pkg)

11. Wildoneshelper: 40 points (1 achvmt pkg)

12. Emmaelise401: 50 points

13. CalzoneManiac: 30 points

14. 21qmcgagin: 20 points

15. Kyodaisuu: 18 points

16. Googleaarex: 10 points

Achievements

Skillz Badges!

Usually awarded for having skills to solving hard questions, etc.

1. Quick Thinker! (+10 points) - Awarded for posting an answer before I write "Please leave your answers here." FIRST FOUNDED BY BLUEEIGHTHNOTE

2. RARE: Leaderboards Expert! (+300 points) - Awarded for being 1st place on the leaderboards for 30+ days. FIRST FOUNDED BY BLUEEIGHTHNOTE

3. RARE: More than a Millenium! (+100 points) - Awarded for being first in the leaderboards and scoring more than 1000 points from the runner-up. FIRST FOUNDED BY BLUEEIGHTHNOTE

4. Questions in a question (+20 points)? Awarded for finding three ambiguities in a single question. EARNED BY IMAMADMAD


Earth Badges

Most rare ones are found here.

1. RARE: Top Ten (+30 points) - Awarded for being the first top 10 people ONLY to participate on the question of the day! EARNED BY THE FIRST 10 PARTICIPATING PEOPLE

2. RARE: Cyclone Centurion! (+250 points) - Awarded for scoring at least 10000 points in the QOTD system! FIRST FOUNDED BY BLUEEIGHTHNOTE.


Sun Badges

All epic ones are found here.

1. EPIC: Lucky Primer (+100 points): Congratulations! You have guessed the lucky prime correctly. Get the Lucky Prime two more times to earn the next achievement! FIRST FOUNDED BY JULIANTHEWIKI.


2. EPIC: Very Lucky Primer (+200 points): Congratulations! You have guessed the lucky prime correctly two more times. Get the Lucky Prime three more times to earn the next achievement! FIRST FOUNDED BY MINIPOP56 AND BLUEEIGHTHNOTE.


3. REALLLLY LUCKY PRIMER (+300 points): Congratulations! You have guessed the lucky prime correctly three more times. Get the Lucky Prime four more times to earn the next achievement! FIRST FOUNDED BY MINIPOP56.

Galaxy Badges

Mysterious badges from a far-out universe. Each one found here is worth 10000+ points and/or 5+ achievement packages.

1. MYSTERY: ATLAS (+10000 points) - ??? FIRST FOUNDED BY BLUEEIGHTHNOTE.

Uniqueness Badges

Unique things one can do in the answers section. ONLY ONE PERSON CAN EARN EACH BADGE.

1. Analyzer! (+10 points) - Awarded for drawing a diagram. FOUNDED BY IMAMADMAD

2. Inspiration! (+5 points) - A question was dedicated to you! FOUNDED BY BLUEEIGHTHNOTE


Trustworthiness Badges

Awarded by how much I trust someone on this wiki. Please do not ask me about these badges.

1. Reliability (+100 points) - Trusted to write a question of a day. FIRST FOUNDED BY BLUEEIGHTHNOTE, AND IMAMADMAD

2. Scoreboard Tinkerer (+100 points) - Trusted to change the scoreboards. FIRST FOUNDED BY BLUEEIGHTHNOTE AND JULIANTHEWIKI

3. Prime Staff (+100 points) - Become a chat moderator, rollbacker, sysop, or bureaucrat on this wikia! FIRST FOUNDED BY BLUEEIGHTHNOTE, JULIANTHEWIKI, TIMBLUESWIN, IMAMADMAD, SUPERMARIO3459, MINIPOP56, AND DALEK-JAMES


Duration Badges

Yes! YOU KNOW IT! PARTICIPATION EVERY DAY!

1. 4-Leaf Clover! (+100 points) - Awarded for participating on the Question of the Day everyday during the month of March! FIRST FOUNDED BY MINIPOP56.

2. April Fools! (+100 points) - Awarded for participating on the Question of the Day everyday during the month of April! FIRST FOUNDED BY MINIPOP56.

Poll
#14. Thank you for supporting PNW, everybody! Also, summer is really here! How's the weather in here?
 
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The poll was created at 08:58 on July 20, 2014, and so far 3 people voted.
Important Pages

Here are some pages to know before getting started to add a page on our encyclopedia of 389 pages.

Then, start contributing! Here is the first prime number, 2, for you to get started!

Slideshow



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