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Results tagged with primes
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user 12205
For challenges about identifying and manipulating prime numbers
15
votes
Determine if a number is prime without using arithmetic
input()in Primes()
3 gives True, 4 gives False …
- 9,018
2
votes
Find the smallest prime from a substring
Sage, 72
Runs in the interactive prompt
a=raw_input()
i=0
p=2
while a not in str(p):i+=1;p=Primes().unrank(i)
p
Primes().unrank(i) gives the ith prime number, with the 0th prime being 2. …
- 9,018