Preskoči na glavno vsebino

Kako preveriti, ali je številka glavno število v Excelu?

Kot že vsi vemo, je praštevilo naravno število, ki vsebuje le dva ločena delitelja naravnega števila: Enega in samega sebe. Če imate na delovnem listu seznam števil, kako lahko preverite, ali so številke praštevila?

Preverite, ali je število prvo število s formulo matrike

Z uporabniško določeno funkcijo preverite, ali je številka glavno število

puščica modri desni mehurček Preverite, ali je število prvo število s formulo matrike

Naslednja formula vam lahko pomaga prepoznati številko, ali je prvo število ali ne, naredite tako:

1. V prazno celico vnesite naslednjo formulo - na primer C2 poleg svojih podatkov:

=IF(A2=2,"Prime",IF(AND(MOD(A2,ROW(INDIRECT("2:"&ROUNDUP(SQRT(A2),0))))<>0),"Prime","Not Prime")) (A2 je celica vsebuje številko, ki jo želite preveriti) in pritisnite Ctrl + Shift + Enter tipke skupaj in dobili boste rezultat, če je številka osnovna, bo v celici prikazana oznaka »Prime«, v nasprotnem primeru bo prikazana oznaka »Not Prime«, glejte posnetek zaslona:

doc preveri, če je prime 1

2. Nato izberite celico C2 in povlecite ročico za polnjenje navzdol do celic, za katere želite uporabiti to formulo, in vse številke bodo prepoznane, če je glavno število ali ne. Oglejte si posnetek zaslona:

doc preveri, če je prime 2

puščica modri desni mehurček Z uporabniško določeno funkcijo preverite, ali je številka glavno število

Naslednja Uporabniško določena funkcija pomaga vam tudi pri preverjanju številk, če so osnovne ali ne, storite naslednje:

1. Držite tipko ALT + F11 tipke za odpiranje Microsoft Visual Basic za aplikacije okno.

2. Kliknite Vstavi > Moduliin prilepite naslednjo kodo v Okno modula.

Koda VBA: Preverite, ali je številka osnovna ali ne:

Function CheckPrime(Numb As Single) As Boolean
'Updateby Extendoffice
    Dim X As Long
    If Numb < 2 Or (Numb <> 2 And Numb Mod 2 = 0) _
     Or Numb <> Int(Numb) Then Exit Function
    For X = 3 To Sqr(Numb) Step 2
        If Numb Mod X = 0 Then Exit Function
    Next
    CheckPrime = True
End Function

3. Nato shranite in zaprite to kodo, se vrnite na delovni list in vnesite to formulo: = checkprime (A2) v prazno celico poleg seznama številk in nato povlecite ročico za polnjenje navzdol do celic, ki jih želite vsebovati s to formulo; če je število glavno število, bo prikazano TRUE, če ne, bo prikazano FALSE, glejte posnetek zaslona:

doc preveri, če je prime 3

Najboljša pisarniška orodja za produktivnost

🤖 Kutools AI Aide: Revolucionirajte analizo podatkov na podlagi: Inteligentna izvedba   |  Ustvari kodo  |  Ustvarite formule po meri  |  Analizirajte podatke in ustvarite grafikone  |  Prikličite funkcije Kutools...
Priljubljene funkcije: Poiščite, označite ali identificirajte dvojnike   |  Izbriši prazne vrstice   |  Združite stolpce ali celice brez izgube podatkov   |   Krog brez formule ...
Super iskanje: Več kriterijev VLookup  |   Multiple Value VLookup  |   VLookup na več listih   |   Nejasno iskanje ....
Napredni spustni seznam: Hitro ustvarite spustni seznam   |  Odvisni spustni seznam   |  Večkrat izberite spustni seznam ....
Upravitelj stolpcev: Dodajte določeno število stolpcev  |  Premakni stolpce  |  Preklop stanja vidnosti skritih stolpcev  |  Primerjaj obsege in stolpce ...
Predstavljene funkcije: Mrežni fokus   |  Pogled oblikovanja   |   Velika vrstica formule   |  Upravitelj delovnih zvezkov in listov   |  Knjižnica virov (Samodejno besedilo)   |  Izbirnik datuma   |  Združite delovne liste   |  Šifriranje/dešifriranje celic   |  Pošljite e-pošto po seznamu   |  Super filter   |   Poseben filter (filter krepko/ležeče/prečrtano ...) ...
15 najboljših kompletov orodij:  12 Besedilo Orodja (dodajanje besedila, Odstrani znake,...)   |   50 + Graf Vrste (Gantt Chart,...)   |   40+ Praktično Formule (Izračunajte starost glede na rojstni dan,...)   |   19 vstavljanje Orodja (Vstavite kodo QR, Vstavi sliko s poti,...)   |   12 Pretvorba Orodja (Številke v besede, Pretvorba valut,...)   |   7 Spoji in razdeli Orodja (Napredne kombinirane vrstice, Razdeljene celice,...)   |   ... in več

Napolnite svoje Excelove spretnosti s Kutools za Excel in izkusite učinkovitost kot še nikoli prej. Kutools za Excel ponuja več kot 300 naprednih funkcij za povečanje produktivnosti in prihranek časa.  Kliknite tukaj, če želite pridobiti funkcijo, ki jo najbolj potrebujete...

Opis

Kartica Office prinaša vmesnik z zavihki v Office in poenostavi vaše delo

  • Omogočite urejanje in branje z zavihki v Wordu, Excelu, PowerPointu, Publisher, Access, Visio in Project.
  • Odprite in ustvarite več dokumentov v novih zavihkih istega okna in ne v novih oknih.
  • Poveča vašo produktivnost za 50%in vsak dan zmanjša na stotine klikov miške za vas!
Comments (21)
No ratings yet. Be the first to rate!
craig
craig
This comment was minimized by the moderator on the site
DO NOT ENTER THE FORMULAE IN THE CELL. Select the cell then paste the formulae in the formulae bar and press ctrl+shft+Enter. it should put { around the formulae} otherwise its wrong.
Reply
0
0
ChrisA
ChrisA     craig
This comment was minimized by the moderator on the site
Craig, Thanks - that works! Sorry, I didn't read the instructions sufficiently carefully.
Reply
Report
0
0
ChrisA
ChrisA
This comment was minimized by the moderator on the site
There is definitely a problem with this equation. I did a direct copy/paste and checked it was a faithful copy but it still has 9, 15, 21, 25, 33, 35 and 39 as primes when they obviously are not. On quick inspection it seems as if factors of 3 and 5 are giving rise to some sort of problem. It is a very complicated formula for a single cell - so much so, I can't work out what it is trying to do. I usually break such things down into multiple cells to make debugging easier (which, I believe is Excel best practice). The function seems to work, though.
Reply
Report
0
0
Chris
Chris
This comment was minimized by the moderator on the site
There is definitely a problem with this equation. I did a direct copy/paste and checked it was a faithful copy but it still has 9, 15, 21, 25, 33, 35 and 39 as primes when they obviously are not. On quick inspection it seems as if factors of 3 and 5 are giving rise to some sort of problem. It is a very complicated formula for a single cell - so much so, I can't work out what it is trying to do. I usually break such things down into multiple cells to make debugging easier (which, I believe is Excel best practice).
Reply
0
0
gian_ve
gian_ve
This comment was minimized by the moderator on the site
Hi.

I am using an italian version of Excel, so the formula does not work and i have an error. Can you help me?

Thanks in advance
Reply
Report
0
0
skyyang
skyyang     gian_ve
This comment was minimized by the moderator on the site
Hi, Gian,
If the formula does not work correctly for you, you can apply the second method-User Defined Function. Please try, hope it can help you!
Thank you!
Reply
Report
0
0
gian_ve
gian_ve     skyyang
This comment was minimized by the moderator on the site
Hi skyyang.
If it can be useful for others researchers, I inform you that I have found the solution to my problem here => http://www.riolab.org/index.php?option=com_content&view=article&id=172&Itemid=68

Thank you!
Reply
Report
0
0
Kiran
Kiran
This comment was minimized by the moderator on the site
Yes it worked wen I did Ctrl+Shift+Enter... !! Thank you..:D and Do u mind explaining the algorithm please.
Reply
0
0
Nathan
Nathan
This comment was minimized by the moderator on the site
There's a reference error when you type in numbers that have more than 12 digits.
Reply
0
0
skyyang
skyyang     Nathan
This comment was minimized by the moderator on the site
Hello,Nathan,
As you said, when the numbers are longer than 12 digits, it will become scientific notation. The formula is not applied for this formatting.
Reply
Report
0
0
vaibhav
vaibhav
This comment was minimized by the moderator on the site
well 4095 is not a prime. still it gives result as prime no though. its incorrect.
Reply
0
0
skyyang
skyyang     vaibhav
This comment was minimized by the moderator on the site
Hello, vaibhav,
When you pasting above formula, you should press Ctrl + Shift + Enter keys together, not just Enter key, please try it again.
Reply
Report
0
0
xsoft.cz@gmail.com
This comment was minimized by the moderator on the site
Your formula is not working. Eg. 1681 is NOT a prime but by formula it is.
=IF(A2=2,"Prime",IF(AND(MOD(A2,ROW(INDIRECT("2:"&ROUNDUP(SQRT(A2),0))))<>0),"Prime","Not Prime"))
Reply
Report
0
0
skyyang
skyyang    
This comment was minimized by the moderator on the site
Hello, Jan,
The above formula is correct, after pastingt the formula into a cell, you should press Ctrl + Shift + Enter keys together, not just Enter key.
Please try it again, thank you!
Reply
Report
0
0
xsoft.cz@gmail.com
    skyyang
This comment was minimized by the moderator on the site
Yes, it was that case with CSE. Thanks (it's fixed now).
https://superuser.com/questions/674566/when-to-use-ctrlshiftenter-and-when-to-use-enter-in-excel

Btw Czech variant to:
=IF(A2=2,"Prime",IF(AND(MOD(A2,ROW(INDIRECT("2:"&ROUNDUP(SQRT(A2),0))))<>0),"Prime","Not Prime"))
is:
=KDYŽ(A2=2;"Prime";KDYŽ(A(MOD(A2;ŘÁDEK(NEPŘÍMÝ.ODKAZ("2:"&ROUNDUP(ODMOCNINA(A2);0))))<>0);"Prime";"Not Prime"))

Compare: https://imgur.com/a/4MgeV
Reply
Report
0
0
John Kennedy Aquino
John Kennedy Aquino
This comment was minimized by the moderator on the site
this is my fastest version Sub generateprimenumbersbetween3() starting_number = 1 'input value here last_number = 30000 'input value here primenumbers = "" For a = starting_number To last_number c = a For b = 2 To c If a Mod b = 0 And c b Then Exit For Else If b = c Then primenumbers = primenumbers & " " & a Exit For Else If Round(a / (b + 1)) + 1 > b Then c = Round(a / (b + 1)) + 1 End If End If End If Next b Next a MsgBox primenumbers End Sub Sub ISPRIME3() number_to_be_checked = 2000000000 'input value here c = number_to_be_checked For b = 2 To c If number_to_be_checked Mod b = 0 And c b Then MsgBox "Not Prime. Divisible by " & b Exit Sub Else If b = c Then MsgBox "Prime" Exit Sub Else If Round(number_to_be_checked / (b + 1)) + 1 > b Then c = Round(number_to_be_checked / (b + 1)) + 1 End If End If End If Next b End Sub
Reply
0
0
Rick
Rick
This comment was minimized by the moderator on the site
The user defined function does not seem to work for numbers above ~16777213
Reply
0
0
John Kennedy Aquino
John Kennedy Aquino     Rick
This comment was minimized by the moderator on the site
Sub generateprimenumbersbetween() starting_number = 99990 'input value here last_number = 99999 'input value here primenumbers = "" For a = starting_number To last_number For b = 2 To a If a - b * Int(a / b) = 0 And a b Then Exit For Else If a = b Then primenumbers = primenumbers & " " & a End If End If Next b Next a MsgBox primenumbers End Sub Function primenumbersbetween(starting_number, last_number) primenumbers = "" For a = starting_number To last_number For b = 2 To a If a - b * Int(a / b) = 0 And a b Then Exit For Else If a = b Then primenumbers = primenumbers & " " & a End If End If Next b Next a primenumbersbetween = primenumbers End Function 'to check if a number is prime Sub ISPRIME() number_to_be_checked = 102 'input value here For b = 2 To number_to_be_checked If number_to_be_checked - b * Int(number_to_be_checked / b) = 0 And _ number_to_be_checked b Then MsgBox "Not Prime. Divisible by " & b Exit Sub Else If number_to_be_checked = b Then MsgBox "Prime" End If End If Next b End Sub 'to check if a number is prime Function ISPRIME2(number_to_be_checked) For b = 2 To number_to_be_checked If number_to_be_checked - b * Int(number_to_be_checked / b) = 0 And _ number_to_be_checked b Then ISPRIME2 = "Not Prime. Divisible by " & b Exit Function Else If number_to_be_checked = b Then ISPRIME2 = "Prime" End If End If Next b End Function
Reply
0
0
There are no comments posted here yet
Load More
Please leave your comments in English
Guest
Posting as Guest
×
Rate this post:
Reset
0   Characters
Suggested Locations