My personal mobile number 9565804301 is a prime number.

# What is a prime number?$

Any integer *p* greater than 1 is called a prime number if and only if its positive factors are 1 and the number *p* itself.

In other words, the natural numbers which are completely divisible by 1 and themselves only and have no other factors, are called prime numbers. **2$ ,$ 3$ ,$ 5$ ,$ 7$ ,$ 11$ ,$ 13$ ,$ 17$ ,$ 19$ ,$ 23$ ,$ 29$ …$ $ $ $ ** etc. are prime numbers [or just Primes]. The numbers greater than 1, which are not prime are called Composite numbers.

Thanks, Ganesh for the tip. He tweeted:

@wpgaurav What are the prime factors of 82079521? I'm trying to find prime factors of my mobile number. #math

— GD (@aintgd) April 23, 2014

His eight digit number couldn’t pass the ‘prime test’ as it had **two prime factors** but my ten digit number did. Exceptional luck!

Check this fact on Wolfram Alpha:

Type `Is 9565804301 a prime?`

in the box and hit enter or just visit this link. You can also do the “prime test” for your own number.

## Is your mobile number a prime?

Feel free to ask questions, send feedback and even point out mistakes. Great conversations start with just a single word.

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## 5 comments

Interesting..

Mine too is prime!

but sharing numbers is a security issue?? right

can they be misused

No security issues at all, for me at least. Being professional costs it.

Nice one. I never wondered what else we can do with our Mobile number! I checked my number which is not a prime… You can say you are lucky if you get a prime number mobile SIM!!!

Yes Nilesh. Not often you see a mobile number which is a prime number. I was lucky at some end.