Euler's phi function |Solved examples |Cryptography

[@victoriasaffirelillo3246]

Since the prime factors of 777 = 3 x 7 x 37, hence phi (777) = phi(3).phi(7).phi(37). Using the rule: phi(p) = p-1, then we have phi(777) = (3-1)(7-1)(37-1) = 2.6.36 = 432.

[@MumblinOnTheMoon]

This video helped me understand the concept so much better than before. Thank you kindly.

[@WarLord13]

Thanks a lot ... I was searching for the "49" questions ,,, u helped me a lot 🙌🙌🙌🙌

[@subscriber-101]

Simple explanation and amazing layout of the rules. I understand this much better now thank you.

[@tiaramaulidasedena328]

i like your video, its easy to understand . thank you

[@ridleyshaw4810]

Mate, this video saved my ass in my Cryptography assignment! Great video! Keep up the good work.

[@jdums8534]

crypto? That sounds high lvl class, I was even forced to learn this sht in first year math class dyum

[@ajit7543]

Thank you so much bro
In one video me understood the whole topic of this vdo view only one no any doubt no repeat🔁 no pause for understand nothing
U r a gem 💎

[@brianerlich2510]

Shoutout to this youtube video for being better than my professor.

[@mandipgujjaryt9842]

Thank you sir your explanation is too great ❤️❤️❤️❤️
And the answer is 432

[@muhammadzkriya9247]

So simple .. so efficient.. So Good

[@anusree.kkattumunda776]

It's too simple... good class& more helped 👏👏👏break a leg

[@sayedamirkazemi6371]

really awesome .thank u so much and very nice explanation

[@ShrenikJain]

Welcome

[@usmanhassan8818]

great and helpful lecture for me.thank you so much.love from pakistan

[@tanushree7620]

Explained so nicely...I got this topic in one go...thank you so much

[@sitenkhuntia3830]

Phi(1)=?

[@arjuncs7638]

Thnak you sir direct to the comcept no beating around the bush wonderfull teaching

[@kyp13260]

Thank you sir you made this yopic very clear for me and yes I did the same mistake but then corrected after watching your video🙏🏻

[@浅見成実]

Thank you so much! Your explanation is very clear!!

[@SRISWA007]

phi(m*n) = phi(m) * phi(n), iff gcd(m,n) = 1 aka m & n should be coprime.
In case of phi(49), we would get our m = 7 and n = 7 and we would be finding phi(7*7) according to formula mentioned above.
But, it only works when gcd(7,7) = 1 ----- but unfortunately, gcd(7,7) = 7.

[@clipXcrafter]

Great video sirrr...really helpful....found error on my teacher's pdf as well

[@risvanaabu8890]

ans 432…????????

[@mainviral4648]

Yes,777=7*3*37

[@sidratul-muntaha6372]

Thanks for great explanation sir, and Phi(777)=432 :)

[@kailasnathastro]

Excellent explanation 🎉

[@kittenkong3135]

Amazing explanation. thank you for helping me with my cryptography class

[@subhadrapatra7733]

Tq so much brother... It's help me a lot to understand 👍😊

[@reshmasonar5643]

crystal clear explanation .Thank you so much

[@laicadagondon6037]

Thank you sir, now I fully understand this topic.

[@tanmayabubusahoo8396]

What type of question ask to related to this concept

[@taebear3355]

Thank you so much for your video. It make my doubts clear ❤️

[@muktikantasamal]

Thankyou Sir ❤️❤️

[@bubblybubbles2789]

Tx sir this topic is in applied maths class 12th cbse ncert now all the doubt regarding this topic crystal clear now 😀

[@DonaldMurf]

how do I find phi of something like 3^90?

[@ushasharan1611]

160200

[@tobiasmeier5076]

5.81864238*10^42

[@eternaldreams876]

some of them still uploaded the easy problem but you uploaded all categories. I like it.

[@fatimatulzahra8318]

Am in difficulty thanks to help me bro

[@rubberband4696]

How will we find the phi of 4

[@nimraghaffar6966]

Thank you sir I understand this topic very clearly so again thank you

[@sreelakshmip5355]

Can you give solution for phi(d(2100))

[@davinchow1536]

Literally lifesaver

[@rubinakhan4781]

Thanks sir .... Muje clear krna Tha ....

[@zohrafatmazaidi5134]

Can you please tell me how to find those elements which do not belong to range of euler phi function?

[@shabhareash]

what if we can't find the factor of a number ?

[@ajinruben4184]

Thanks so much..very clear explanation

[@mohitzen]

Very helpful. Thanks for your help

[@hpsharma1207]

great explanation thank you sir.

[@suvarthagollamandala8101]

Thank you Sir 🙏

[@anjaliyadav6303]

By the way very helpful lecture .. thanks a lot 🙏🏻

[@kingpin7392]

Sir nice strategy of explaining with examples 😀

[@SaveIndianWomen]

Great work 🎁

[@ARUNAVA123100]

The great explanation. You are a great teacher .The answer of phi(777) is 660

[@Ahmad_Alhasanat]

φ(777)=432 not 660
φ(777)=φ(7)φ((3)φ(37)
= 6x2x36
= 432

[@jabulilekhoza7617]

Is rule 3 equivalent to p(p-1) ?

[@mangaraj45]

Good explanation 🙏🏼

[@kantatanahashi4797]

YOU ARE THE MAN

[@victorraulagurtotavara4359]

simple and practice, very good ¡

[@chethansv4135]

Ans:-432

[@Fatimaalkabbi1991]

شكرا جزيلا .....💞

[@SahrinBanu]

What if they are 2 prime numbers

[@souftea]

Sir, shouldn't phi of 1 be 1??
Nice explanation!

[@RealShinra]

1 to the power of anything is still 1, so 1 - 1 is 0

[@harshraghav5270]

Thanks brother 🔥

[@vasanthytk6171]

Thank you so much.....😍

[@mathmagic3202]

Thanks a lot sir ji

[@radhikanegi28]

Thank you so much sir 😊😊

[@lzk_official5122]

Thank you sir for a very clear lecture

[@md.shakeelquantumlecturese8139]

Sir, phi of 1 equal 1 not zero

[@r.psaxena8187]

I liked your video
You explain very nice

[@Thakurs0]

777=37×3×7
Phi(37)×phi(3)×phi(7)
=36×2×6=432

[@sahibdeepsinghratta3916]

Vry helpful video thx sir

[@harmanmuhammad3696]

well done helped a lot.

[@harleylover345]

Fast and understanding

[@shafnaazeeb6120]

Nice job🌼

[@chiraggouri]

nice explain...thx

[@ramonadlawan8397]

Thank you so much..........

[@m10pradyuman]

The value of euler phi of 1 = 1, not 0 as said in the video.

[@harshdixitproductions]

Hey.. mene bohot search kia
Mila nahi
Can you tell me why is that ?

[@manaspathak9746]

Is 660 is the answer??
Plz answer it....

[@sonalishinde1100]

330

[@juwileenedomondon1377]

nice ...:) thank you thank you.. :) very clear .. i learned a lot

[@kdramafangirl5981]

Thanks, it's literally save me👍

[@somalekhatb3834]

phi(777)=432

[@shekhdeep]

Good Job Brother

[@vikash1752]

Nice explanation

[@nagasatisha1]

very nice explaination

[@mariatariq3895]

Great work

[@poojakadam8211]

Can you solve it for n=12

[@rajgupta5158]

ans is 4

[@saiharitha5784]

Hw ans is 776.plz reply

[@aa-gc3fg]

Thank you sir

[@rajvee5825]

What is the answer of phi 4

[@gitarthakalita1108]

2

[@subiyaaly6685]

I think phi(1^10)=0?

[@mmmapplesauce1673]

Thanks man

[@witriandika7080]

Thankyou so much

[@fatimatulzahra8318]

Ilove U 🎉

[@VishalSaini-ce6ti]

Thanks sir....

[@aroojfatima6482]

thankew💞👍

[@jhoncarlodelmonte1254]

Why it become 64 ? (EXAMPLE 3)
If Phi of 2 raise to 4 = (16-8) = 6
Phi of 5 = (5-1) = 4
Phi of 3 = (3-1) = 2
6 x 4 x 2 = 48

[@jhoncarlodelmonte1254]

Anyways thank you for the information

[@sonalishinde1100]

16-8=8

[@riyak.s.817]

Got your each and every line very clearly👍👍

[@somansoman8162]

Tnk u sir

[@MDJABIDKHAN]

Sir phi(1)=1 hota hai na

[@AvtarSingh-tv6fs]

Great 👍

[@jadabbarik2751]

432 is the answer,, phi (1) =1 not 0

[@shivangimaurya348]

Thanks

[@mahendrakumarjangir3100]

He don't know so many properties of Euler phai function, please use Burton Number theory

[@markogutu2935]

Amazing

[@all_exams_gs_upsc]

Helpful bro

[@zanibawanzanibawan1511]

Thanks from pakistan thanks a lot kl mra mid hai uni mai ap ny hlp ki

[@akshitjasrotia9579]

very useful