# Is 1466996987 a prime?

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Char. Limit
Gold Member
Try dividing it by every prime below fifty. You'll find out whether you're right or wrong...

thank u
its divisible by 29,43

Char. Limit
Gold Member
And one other, but if you want to find that one, just divide your original number by (29*43).

how can i know divide it by primes below 50 or other

how can i know divide it by primes below 50 or other
Go to the website Wolfram Alpha and type "FactorInteger 1466996987" into the input box. Then you know.

Char. Limit
Gold Member
I didn't even type FactorInteger...

If you type in 1466996987 into the input box, it will give you all kinds of properties about the number... including prime factorization.

Yeah. I should have known. There was method to my madness. I used Mathematica Information to find the operator used to factor primes, then figured Worlframe Alpha would recognize it too.

Borek
Mentor
I just tried factor 1466996987 from command line. But even factor(1466996987) on TI-89 gives answer almost immediately.