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Diffstat (limited to '041.py')
| -rw-r--r-- | 041.py | 26 |
1 files changed, 26 insertions, 0 deletions
@@ -0,0 +1,26 @@ +from common import pandigital, sieve + +primes = list(sieve(10**6).primes()) +numbers = [x for x in pandigital(1, 9).numbers(10) if x > 10**8] +numbers += [x for x in pandigital(1, 8).numbers(10) if x > 10**7] +numbers += [x for x in pandigital(1, 7).numbers(10) if x > 10**6] +numbers += [x for x in pandigital(1, 6).numbers(10) if x > 10**5] +numbers += [x for x in pandigital(1, 5).numbers(10) if x > 10**4] +numbers += [x for x in pandigital(1, 4).numbers(10) if x > 10**3] +numbers += [x for x in pandigital(1, 3).numbers(10) if x > 10**2] +numbers += [x for x in pandigital(1, 2).numbers(10) if x > 10**1] + +numbers.sort(reverse=True) + +# check for divisibility up to sqrt(n), as sieve requires too much memory +def is_prime(n): + for p in primes: + if n % p == 0: + return False + return True + +for n in numbers: + if is_prime(n): + print n + break + |
