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Coolguy52 4 days ago
  As I believe I mentioned before, I call numbers ‘candidates’ if they satisfy gcd(n,30)=1.

The first to check is 721, but that should be clearly 7*100+21=7*100+7*3=7*103.

The next to check is 727 and that works, so 727 is the next prime.
chris3000 4 days ago
  So, who has the next prime number after this?

719
Coolguy52 8 months ago
  703 = 19*37, 707 = 7*101, 709 is prime.
chris3000 8 months ago
  701............
Coolguy52 8 months ago
  sixnineone
chris3000 8 months ago
  683 is the next prime number.
Coolguy52 9 months ago
  Well as I answered last with 677 I won’t tell you - as it’s not my turn and me just mindlessly typing prime numbers to myself wouldn’t be much of a ‘game’ ;)

SPOILER
The next candidate that aren’t a multiple of 2,3 or 5 are 679, 683, 689, 691 and 697. Two of those numbers are prime. One has a least prime factor of 7, one has a least prime factor of 13, and one has a least prime factor of 17.


You don’t have to google the numbers, you can just work out the next prime by systematically checking every number above the last one until you find one with no factors, which given what suhangha said, you only need to check that prime numbers up to and including 23 aren’t factors for now (29 will be required when we go above 840 if you don’t recognise squares, or 898 if you do).
chris3000 9 months ago
  So, what's the next prime number, I'm not cheating and looking it up on Google.
PuzzleFan 9 months ago
  I'm not really good with prime numbers, there's so many of them.
Coolguy52 9 months ago
  677 should be the next one.
suhangha 9 months ago
  673.......
Coolguy52 9 months ago
  661
suhangha 9 months ago
  659! ! ! ! !
Coolguy52 9 months ago
  649=11*59
653=653

653 is the next prime.
suhangha 9 months ago
  647
, , , , ,
Coolguy52 9 months ago
  643 is the next candidate for my method, and indeed 643 is found to be the next prime.
suhangha 10 months ago
  641
hundredth prime number by me, and it is a-hundred away from that!
Coolguy52 10 months ago
  The next prime is 631. Below is my method for working out the answer.

SPOILER
I first work out the next numbers above 619 which do not share a factor with 30. The list starts 623, 629, 631...

Firstly we have 623, which is 7*89 (623+7=630=7*90)

Next we have 629, which is 17*37 (629+17*3=680=17*40)

Next we have 631, which is prime.
chris3000 10 months ago
  619 would be the next prime number from all the research and knowledge that I learned in math class back in 2009. I remember most of the terminology.
Coolguy52 10 months ago
  Well as you previously mentioned you can check up to 666 with primes under 20, so long as you recognise squares of primes, as we see the first non-square semiprime with both prime factors above 20 at 667.

That being said, 617 is the next prime.
suhangha 10 months ago
  613

How tricky does it get after 666. Anyway, I'm still having fun. He may have a factorization calculator, but using any digital calculator is pointless in the game.
Coolguy52 10 months ago
  607 should be the next one. Using a prime factor calculator seems to take away from the game though. In fact I usually do it in my head but I think if we get much further this process will become very tedious.
suhangha 10 months ago
  601

chfirs your penalty is 2 points not 3. You're fine. invalid penalty because 573 is wrong but previous is yourself-prime. btw, are you tried with calc? Then you cant fail
chris3000 1 year ago
  599 is next!
Coolguy52 1 year ago
  I believe so, and I think 593 comes after.
john96 1 year ago
  So what is the next number here... 587?
suhangha-2 1 year ago
  I have a calculator with prime factorization function. but I never cheat, what the my favorite fun game!
chris3000 1 year ago
  Ah, okay. Thanks for correcting me, I did the math too with a calculator.
Coolguy52 1 year ago
  573=3*191. 577 should be the next prime.
chris3000 1 year ago
  I believe the next one after that would be 573, as it is an odd number.

General

First post of the topic

kalina200 7 years ago
  The backstory to this is about 2 weeks ago Coolguy52 on discord asked me to play a maths game called the prime game.

Fast forward 2 weeks every day he wants to play it with me and CubixIII and it becomes a meme to wind eachother up, and as with every insider meme, it won't go away ;-;

So I thought the best idea was to bring it to bonuslevel xD

Basically this torture is gonna make everyone hate me (but actually send it to Coolguy52)

So the rules:
Basically you have to say the prime after the last without doubleposting and with only one number in the comment and if I say 2 someone will say the next one (3)

This is only prime numbers

If someone says the wrong number or no one posts for 2 weeks then it reset and if someone gets it wrong they get 1 point.

You get achievements when you reach these milestones:

50 - Novice
100 - Average
200 - Better than me and cubix
300 - #PrimeNations (coolguys thingy) - Current
500 - Epic
700 - Hacker
800 - Good as coolguy
900 - better than coolguy
1000 - 4 digets?? 4 no prime.. no sense??
1500 - Albert Einstein
2000 - coolguy x100
5000 - Prime Is My City
10000 - Prime Is My Country
20000 - Prime Is My Planet
50000 - Prime Is Life, The Universe, And Everything
100000 - You need to re-evaluate your life
SPOILER
join the club


If you get points, however, you get these
1 point - You lost it for us ;-;
2 points - Stop it
5 points - You hate primes
10 points - IQ of 50
20 points - IQ of 1
50 points - Dumber than a wall

Points of people:
SPOILER
Chris3000 - 1


Highest Score:
0

I'll start:
2

Good luck
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