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| Prime with distinct digits (Posted on 2013-09-18) |
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What is the biggest prime number, no digits repeated if
a. zero can be included?
b. zero is excluded?
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Submitted by Ady TZIDON
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Solution:
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9876543210 is the largest number with all digit being different. 987654321- if zeroeless.
Starting with those numbers and going down we find the primes 987654103 in the 1st case and 98765431 in the 2nd case. |
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