is it prime?

Number Theory Level 1

500 × 700 500 \times 700 Is the product above prime?

No Yes

Munem Shahriar by Munem Shahriar , 18, Bangladesh

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3 solutions

Zach Abueg
Apr 9, 2017

A prime number is a number whose sole factors are 1 1 and itself. Since the product has factors 500 500 and 700 700 , we can see without multiplying that it is not a prime number.

2 Helpful 0 Interesting 1 Brilliant 0 Confused
Mohammad Khaza
Jul 30, 2017

prime number:--A prime number is a whole number greater than 1, whose only two whole-number factors are 1 and itself. The first few prime numbers are 2, 3, 5, 7, 11, 13, 17, 19, 23, and 29 etc..

as , 500 500 and 700 700 are divided by multiple numbers without 1 & themselves and they are not primes,

so, their product can not be prime.

1 Helpful 0 Interesting 0 Brilliant 0 Confused
Syed Hamza Khalid
May 11, 2017

No, because we are multiplying it by some no.s to get it.

0 Helpful 0 Interesting 1 Brilliant 0 Confused

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