Prime or Composite? Check in 10 Seconds II Strange Property of Prime Numbers

Join our whatsapp community for free LIVE CLASSES:
chat.whatsapp....
Download our 'LEARNING LOOP' App for Amazing content:
play.google.co...
Get mentored through one-to-one paid classes by Dr. Suresh Aggarwal himself, WhatsApp: [phone]
Visit www.sureshaggarwal.in for PDFs of quant, reasoning & CBSE Maths and Science
For business enquiries and advertising on the channel, e-mail:
[e-mail]
For FREE Reasoning videos, visit our channel:
/ @drsureshaggarwal
Our Facebook page:
www.facebook.c...
Follow us on Instagram:
www.instagram....
#mathematics #math #vedicmaths #quantitativeaptitude #shorttricks #suresh #sureshaggarwal #cbse #icse #cbseboard #ssc #ibps #quant #cat #upsc #placements #ntse #railways #bankingexams #ssccgl #ssc_cgl

[@shabirmir9597]

(P*P -1) is divisible by 24 for all odd p whether prime or composite e.g let p be 119, 221, 133 . These are composite odd exhibiting the same property. This property is not peculiar to primes but to odd numbers prime or composite.

[@babupinjari5698]

सर बोर्ड का कलर व्हाइट कीजिए।पढ़ने में दिक्कत होती है

[@sanketgajbhiye9703]

Nice sir very useful

[@omprakashnaval2199]

Very amazing. Thanks a lot

[@syedmdabid7191]

This method knwn to us formerly. It ain't useful for a big number as more than 4 digits.

[@ajeethpandey]

65 is not a prime number but follows your formula ie
65²=4225=4224+1=24(176)+1
So your formula is not unique one to find prime number however it calculates prime number correctly.

[@shabirmir9597]

@@ajeethpandey the indicated formula is valid for all odd numbers whether prime or odd composite. It is not unique to the primes so it is useless to test for a prime.