Prime Numbers

dan dan

641

[Deleted User]

619?

<prepares to stand corrected>

[Deleted User]

Ooh!

Correct, but late.

XFR Bear

yep - it's correct Minty

643

XFR Bear

647

[Deleted User]

643?

[Deleted User]

LOL

649?

[Deleted User]

653

XFR Bear

649 = 11 x 59

dan dan

659

XFR Bear

659 though...

XFR Bear

661

[Deleted User]

How did you know that Bear? Do you know all the prime numbers?

dan dan

673

dan dan

677

dan dan

You can spot prime numbers a mile off.

They look awkward.

dan dan

Plus, he knows how to google.

dan dan

683

Plodding Dave

Try 2(power of n)-1 (where n=prime) results in a prime for a lot of ns. For example, 2 power of 3 =8 take away 1 =7 which is prime. A Mersenne prime. I thank you.

[Deleted User]

it's not easy to find ones of less than 10000 digits though

689?

dan dan

no

691

dan dan

701

dan dan

709

XFR Bear

Snigger - just been looking at WIkipedia and there's even some things called McNugget primes - which stems from some historically thing about content of chicken McNugget boxes.

Who said maths can't be fun eh? :oD

[Deleted User]

I think 677 looks really comfortable.

[Deleted User]

In fact, I might make it my new favourite number.

dan dan

719

dan dan

727

XFR Bear

683

XFR Bear

oops feck - went by Minty's post!

733