Nọ́mbà àkọ́kọ́

Ninu Ìmọ̀ Ìṣirò nọ́mbà àkọ́kọ́ (prime numbers) ni a si àwọn nomba adabaye (natural numbers) tí wọn ní nọmba ádábá méjí péreé tí a lè fí pín wọn dọ́gba, éyí ní nọmbaa 1 atí nọmba ákọkọ fún árá rẹ. Áwọn nọmba ákọkọ pọ tó bẹẹ tó fí jẹ wípé wọn kò lòpin gẹgẹe bí Efklidi ṣé fihàn ní ọdúnn 300 K.J (kia to bi Jesu, K.J). Nọmba ódò 0 ati ọ̀kan 1 kì ṣé nọmba akọkọ.

Àwọn nọ́mbà nínú ìmọ̀ mathematiki
Basic
${\displaystyle \mathbb {N} \subset \mathbb {Z} \subset \mathbb {Q} \subset \mathbb {R} \subset \mathbb {C} }$ Nọ́mbà àdábáyé ${\displaystyle \mathbb {N} }$ Nọ́mbà alòdì Nọ́mbà odidi ${\displaystyle \mathbb {Z} }$ Nọ́mbà oníìpín ${\displaystyle \mathbb {Q} }$ Nọ́mbà aláìníìpín Nọ́mbà gidi ${\displaystyle \mathbb {R} }$ Nọ́mbà tíkòsí ${\displaystyle \mathbb {I} }$ Nọ́mbà tóṣòro ${\displaystyle \mathbb {C} }$ Nomba aljebra ${\displaystyle \mathbb {A} }$ Nọ́mbà tíkòlónkà
Complex extensions
Quaternions ${\displaystyle \mathbb {H} }$ Octonions ${\displaystyle \mathbb {O} }$ Sedenions ${\displaystyle \mathbb {S} }$ Cayley-Dickson construction Split-complex numbers ${\displaystyle \mathbb {R} ^{1,1}}$ Bicomplex numbers Biquaternions Coquaternions Tessarines Hypercomplex numbers
Other extensions
Musean hypernumbers Superreal numbers Hyperreal numbers Surreal numbers Dual numbers Transfinite numbers
Other
Nominal numbers Serial numbers Ordinal numbers Cardinal numbers Nomba akoko p-adic numbers Constructible numbers Computable numbers Integer sequences Mathematical constants Large numbers π = 3.141592654… e = 2.718281828… i (Imaginary unit) ${\displaystyle i^{2}=-1}$ ∞ (infinity)
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Bí àwọnon nọmba akọkọ ṣé

ẹètárá wọn wí íi yi : 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, àtí, and 113

Nọmba 2 (íkèji)

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Nomba Akoko gege bi baba awon ááoíba ọdabÁ

ọIpóleùse ẹAbagbo Isesiro la kale pe gbogbo nọ́mbà odidi (integers) apa otun ti won tobi ju 1 lo se ko sile gege bi isodipupo nomba akoko kan tabi jubelo ni ona kan pato. Fun apere a le ko:

${\displaystyle 23244=2^{2}\times 3\times 13\times 149}$

Gbogbo Awon Nomba Akoko

Awon nomba akoko ko ni ye. Eyi ti je fifihan lopolopo ona. Eni akoko to koko fi eyi han ni Efklidi. Bi o se fi han ni yi:

E je ki a so pe awon nomba akoko to l'opin (finite) kan wa. E je ki a pe awon nomba wonyi ni m. Se isodipupo gbogbo m, ki o si se aropo re pelu okan (nomba Efklidi). Nomba esi ti ri ko se pin pelu ikojopo number akoko kankan t'olopin, nitoripe bi a ba se pin to okan yio seku, be sini okan ko se pin pelu nomba akoko. Nipa bayi, tabi ki o je nomba akoko fun ra ara re tabi ki o se pin pelu nomba akoko miran ti ko si ninu ikojopo to l'opin. Botiwulekaje, a gbudo ni nomba akoko ti yio je m + 1.