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answer is wrong?  Go to the Prime Factory challenge

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answer is wrong?
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I use python to run prime number program ,Get answer is 1000003 and 1000033,But system tell me answer is wrong,1000003 is not prime number?

I need some help...
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RE: answer is wrong?
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which is a prime whose digit sum 1+3=4 is not prime
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RE: answer is wrong?
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Quote from mingxuan
Apr 27, 2023 - 07:52:43

I use python to run prime number program ,Get answer is 1000003 and 1000033,But system tell me answer is wrong,1000003 is not prime number?

I need some help...

GeSHi`ed Plaintext code
1
2
1000003 -> is prime
1000033 -> is prime


Quote from ianpim
Apr 27, 2023 - 08:58:47

which is a prime whose digit sum 1+3=4 is not prime

Afaik 1 is not a prime number; these begin with 2. Which is not prime? 13 for example:
GeSHi`ed Plaintext code
1
2
13 is prime
1+3 = 4 not prime

Maybe you wanted to know "whose digits sum IS prime". For that here a good example (at least I hope): https://www.geeksforgeeks.org/count-all-prime-numbers-in-a-given-range-whose-sum-of-digits-is-also-prime/]
Last edited by occasus - May 06, 2023 - 15:13:03
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RE: answer is wrong?
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I have a same problem but with different numbers.

My numbers are:

1000253 is prime => 1+2+5+3 = 11 is also prime


2000003 is prime => 2+3 = 5 is also prime

My solution is 10002532000003, and my answer is still wrong.
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RE: answer is wrong?
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You need the first two numbers. there are numbers earlier
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