Primes

[Green Baron]

2503

[The_Arcitect]

[Benjamin Kerman]

2531

[Gargamel]

2539

A little skiff racing anyone?  hmmmm @DuoDex?

 

[Green Baron]

2543

Edited February 12, 2019 by Green Baron

[Gargamel]

2549

[Benjamin Kerman]

[Green Baron]

2557

https://www.chiefdelphi.com/t/pic-first-team-2557-rebound-rumble-robot/177270

(big image)

Edited February 13, 2019 by Green Baron

[Gargamel]

2579      Gap of 22!   Followed by another!  Who wants it!? Nevermind, I'm bad at simple math at times. 

 

[GRS]

BAM !!!

2591

[Triop]

[Benjamin Kerman]

Disregarding Triop's post…

Gap of _2_. Take that!

[Green Baron]

Train pic:

2609

 

[liya]

2615

[Green Baron]

Welcome to the forum !

And ... nope on first sight 2615 is divisable by 5 (and maybe others). Want to try again ?

Spoiler

Edit: a quick&dirty and terribly ineffective C function to check if n is prime:

static inline int isPrime( int n ) {
	if( 0 == ( n % 2 ) )
		return 0;
	if( 0 == ( n % 3 ) )
		return 0;
	if( 0 == ( n % 5 ) )
		return 0;
	int l = n/2;
	for( int c = 7; c <= l; c += 2 ) {
		if( 0 == ( n % c ) ) {
			// printf( "%d is divisable by %d\n", n, c );
			return 0;
		}
	}
	return 1;
}

 

 

Edited February 14, 2019 by Green Baron

[Ozymandias_the_Goat]

country roooooaad, taaake me hooooomnee...

[Green Baron]

2621

*scratchhead* Are they meant to be for humans ? My toes hurt just from looking at these ...

Edited February 14, 2019 by Green Baron

[Ozymandias_the_Goat]

2 hours ago, Green Baron said:

*scratchhead* Are they meant to be for humans ? My toes hurt just from looking at these ...

I’d do anything for fashion 

Back on track...

2633 (it’s a little bit hard to find)

[Green Baron]

Track ? Ay !

2647

How they all look towards the camera. Even the doggy .... :-)

 

Edited February 14, 2019 by Green Baron

[PunkyFickle]

2657

Gap of 10

Edited February 14, 2019 by PunkyFickle
Gap of 10

[Gargamel]

Ok... assuming we're back on track after the couple misdirections up there....

Sigh.... fine, another train

2659

[Benjamin Kerman]

2663

[Green Baron]

2671

[Gargamel]

And now for something completely different:

2677

 

[Benjamin Kerman]

2683