Difference between revisions of "ZCubes/How to Apply Prime Numbers Twins, Cousins, Sexy Primes"
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| Line 20: | Line 20: | ||
) | ) | ||
| − | + | gap=4 | |
| − | PRIMES(100)//0) | + | PRIMES(100)//0) |
.filter( | .filter( | ||
(x,i,d)=> | (x,i,d)=> | ||
| Line 30: | Line 30: | ||
.$(x=>[x-gap,x]) | .$(x=>[x-gap,x]) | ||
| − | + | function primeswithgap(gap,till) | |
{ | { | ||
till=till||100; | till=till||100; | ||
| Line 43: | Line 43: | ||
return([ret ~]) | return([ret ~]) | ||
} | } | ||
| − | [2..10..2,100]@primeswithgap | + | |
| − | [2..10..2,1000]@primeswithgap | + | [2..10..2,100]@primeswithgap |
| − | res=[2..30..2,1000]@primeswithgap; | + | [2..10..2,1000]@primeswithgap |
| − | res[3] | + | res=[2..30..2,1000]@primeswithgap; |
| + | res[3] | ||
Revision as of 05:12, 11 March 2020
How to Apply Prime Numbers Twins, Cousins, Sexy Primes
This video demonstrates the computations of special prime numbers using ZCubes. Twin primes are prime numbers separated by two. Cousin primes are prime numbers separated by 4 and sexy primes are separated by six. Using ZCubes you can generate these primes or create functions to generate prime numbers with any gap. You can then do further analysis,
Video
Code
PRIMES(100)
.map(
(x,i,d)=>
[
i
d[i],
d.slice(0,i),
(i>0?d[i]|-|d.slice(0,i):[])
]
)
gap=4
PRIMES(100)//0)
.filter(
(x,i,d)=>
(i>0?d[i]|-|d.slice(0,i):[])
.include(gap)
)
.$(x=>[x-gap,x])
function primeswithgap(gap,till)
{
till=till||100;
var ret=
PRIMES(till)//0)
.filter(
(x,i,d)=>
((i>0?(d[i]|-|d.slice(0,i):[])
.include(gap))
)
.$(x=>x-gap,x)
return([ret ~])
}
[2..10..2,100]@primeswithgap [2..10..2,1000]@primeswithgap res=[2..30..2,1000]@primeswithgap; res[3]
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