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0:00:00.740,0:00:04.160
Ekri nan décomposition nan faktè premye a 75 an.

0:00:04.160,0:00:07.390
Ekri repons ou yo sèvi nan notation exponentielle.

0:00:07.390,0:00:08.970
Se konsa, nou gen yon sèten kantite bagay enteresan.

0:00:08.970,0:00:12.410
Factorisation nonb premye ak di nan notation exponentielle.

0:00:12.410,0:00:15.460
Nou pral nou soucier nan notation exponentielle apre.

0:00:15.460,0:00:18.560
Lè sa a, anvan, nou te pou nou, nou soucier sa ki yon

0:00:18.560,0:00:19.380
kantite premye?

0:00:19.380,0:00:22.240
Lè yon rapèl, yon kantite premye a se yon kantite

0:00:22.240,0:00:26.130
ki se divisible ke li menm ak sa yo egzanp

0:00:26.130,0:00:28.880
chif premye - kite m 'ekri kèk nimewo.

0:00:28.880,0:00:34.753
Premyèman, PA kouzine.

0:00:34.760,0:00:36.840
Se So 2 se yon kantite premye.

0:00:36.840,0:00:39.850
Li se sèlman divisible nan 1 ak 2.

0:00:39.850,0:00:42.490
3 se yon lòt kantite premye.

0:00:42.490,0:00:46.790
Koulye a, 4 PA premye yo, paske li se

0:00:46.790,0:00:49.790
divisible nan 1, 2 ak 4.

0:00:49.790,0:00:50.580
Nou ta ka kontinye.

0:00:50.580,0:00:56.220
5, ak 5 se divisible ke 1 ak 5, konsa 5 se premye.

0:00:56.220,0:00:59.920
6 PA premye paske li se divisible nan 2 ak 3.

0:00:59.920,0:01:01.590
Mwen panse ke lide jeneral.

0:01:01.590,0:01:04.160
Nou tout nou deplase nan 7, 7 se premye.

0:01:04.160,0:01:06.470
Li se sèlman divisible nan 1 ak 7.

0:01:06.470,0:01:08.220
8 PA premye.

0:01:08.220,0:01:11.440
9 ka sonde yo di li se premye, men sonje nou, li

0:01:11.440,0:01:15.420
se divisible nan 3, konsa 9 SE PA premye.

0:01:15.420,0:01:18.970
Premyèman SE PA menm bagay ke nonb impairs.

0:01:18.970,0:01:21.400
Kidonk, si ou deplase 10, 10 SE PA nesesè,

0:01:21.400,0:01:23.560
divisible nan 2 ak 5.

0:01:23.560,0:01:27.220
11 se divisible ke 1 ak 11, ki di 11 se

0:01:27.220,0:01:28.240
Apre sa, yon kantite premye.

0:01:28.240,0:01:29.780
Epi nou ta ka kontinye.

0:01:29.780,0:01:31.570
Gen lòt moun ki te ekri nan pwogram òdinatè nan rechèch pou

0:01:31.570,0:01:33.260
pi enpòtan, ak tout sa.

0:01:33.260,0:01:35.220
Lè sa a, koulye a, nou konnen sa ki nan yon kantite premye, yon gwo

0:01:35.220,0:01:39.240
factorisation rompt yon kantite tankou 75, nan yon

0:01:39.240,0:01:41.620
pwodwi chif premye yo.

0:01:41.620,0:01:43.180
Lè sa a, eseye fè bagay sa yo.

0:01:43.180,0:01:45.530
Kòmanse konsa ak 75, e mwen pral fè

0:01:45.530,0:01:49.080
ak sa ke nou rele yon factorisation twa.

0:01:49.080,0:01:51.750
Se konsa, anvan eseye jwenn pi piti kantite premye ki

0:01:51.750,0:01:53.890
ale nan 75 lane.

0:01:53.890,0:01:55.430
Koulye a, pi piti a kantite premye se 2.

0:01:55.430,0:01:57.390
Hare 2 Go nan 75?

0:01:57.390,0:02:00.705
Se konsa, 75 se yon kantite impair oswa nimewo a nan plas moun,

0:02:00.705,0:02:02.280
5 an, se yon kantite impair.

0:02:02.280,0:02:06.580
5 PA divisible nan 2, konsa de p'ap kapab antre nan 75 lane.

0:02:06.580,0:02:08.090
Lè sa a, ou ka eseye 3.

0:02:08.090,0:02:09.639
T 3 ale nan 75 lane?

0:02:09.639,0:02:12.440
Enben, 7 ak 5 se 12.

0:02:12.440,0:02:15.480
12 se divisible nan 3, konsa 3 pase nan li.

0:02:15.480,0:02:20.440
Se konsa, 75 se 3 fwa pi plis.

0:02:20.440,0:02:22.990
Si ou deja eseye chanje, ou konnen ke si

0:02:22.990,0:02:25.890
te gen twa chanm yo, moun ki a 75 santim, oswa si ou gen 3

0:02:25.890,0:02:28.930
25 fwa, li te 75 an.

0:02:28.930,0:02:31.560
Kidonk, se 3 fwa 25.

0:02:31.560,0:02:33.720
Epi ou ka vin anpil la, si nou p'ap vle kwè mwen.

0:02:33.720,0:02:35.960
Miltip 3 fwa 25.

0:02:35.960,0:02:40.470
Koulye a, li divisible nan 25 - ou ka bay jiska 2.

0:02:40.470,0:02:44.910
Si 75 SE PA divisible nan 2, 25 se p'ap divisible

0:02:44.910,0:02:46.000
nan 2 tou.

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Men, ka 25 se divisible nan 3 fwa.

0:02:48.730,0:02:52.290
Kidonk, si nou pran chif 2 + 5, ou jwenn 7.

0:02:52.290,0:02:57.700
7 SE PA divisible nan 3, konsa 25 SE PA divisible nan 3.

0:02:57.700,0:02:59.480
Kidonk, swiv: 5.

0:02:59.480,0:03:01.430
Is 25, divisible nan 5?

0:03:01.430,0:03:01.980
Enben, se sekirite.

0:03:01.980,0:03:03.590
Li se 5 fwa 5.

0:03:03.590,0:03:08.330
Se konsa, 25 se 5 fwa 5.

0:03:08.330,0:03:11.730
Nou te fini ak nou yo premye affacturage, paske koulye a

0:03:11.730,0:03:13.390
te tout chif premye isit la.

0:03:13.390,0:03:18.270
Kidonk, nou ka ekri ke 75 se 3 fwa 5 fwa 5.

0:03:18.270,0:03:25.640
Se konsa, 75 se egal 3 fwa 5 fwa 5.

0:03:25.640,0:03:27.350
Nou kapab di ke se 3 fwa 25.

0:03:27.350,0:03:29.400
25 se 5 fwa 5.

0:03:29.400,0:03:33.370
3 fwa 25, 25 se 5 fwa 5.

0:03:33.370,0:03:36.460
Se konsa, yon factorisation nonb premye a, men mwen vle

0:03:36.460,0:03:41.690
ekri repons yo sèvi nan notation exponentielle.

0:03:41.690,0:03:44.560
Sa vle di konsa ke jis ke si nou te repete chif yo premye, nou ka ekri

0:03:44.560,0:03:45.920
moun ki, menm jan li rapòte.

0:03:45.920,0:03:48.480
Lè sa a, ki se 5 nan 5?

0:03:48.480,0:03:52.380
5 fwa 5 se 5 sitèlman li menm menm de fwa.

0:03:52.380,0:03:56.310
Se menm bagay la ke 5 nan dezyèm pouvwa.

0:03:56.310,0:03:58.380
Kidonk, si nou M'ap ekri nou repons avèk exponentielle

0:03:58.380,0:04:03.420
notation, ta ka di ke se 3 fwa 5 nan

0:04:03.420,0:04:08.110
dezyèm pouvwa a, ki se menm 5 fwa 5.