Smallest multiple
Problem 5
2520 is the smallest number that can be divided by each of the numbers from 1 to 10 without any remainder.
What is the smallest positive number that is evenly di...
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编程语言 时间：
2015-01-26 22:49:54
阅读次数：
289
10001st prime
Problem 7
By listing the first six prime numbers: 2, 3, 5, 7, 11, and 13, we can see that the 6th prime is 13.
What is the 10 001st prime number?
python code :
import ma...
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编程语言 时间：
2015-01-26 22:47:11
阅读次数：
208
Largest product in a series
Problem 8
The four adjacent digits in the 1000-digit number that have the greatest product are 9 × 9 × 8 × 9 = 5832.
73167176531330624919225119674426574742355349...
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编程语言 时间：
2015-01-26 22:46:14
阅读次数：
357
Problem 3
The prime factors of 13195 are 5, 7, 13 and 29.
What is the largest prime factor of the number 600851475143 ?
python code:
import math
sqrt=math.sqrt
def func(x):
...
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编程语言 时间：
2015-01-26 21:07:23
阅读次数：
216
问题重述： 2520 is the smallest number that can be divided by each of the numbers from 1 to 10 without any remainder. What is the smallest positive num...
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其他好文 时间：
2014-10-19 16:59:06
阅读次数：
232
那天的题挺简单的下面来看下 No1 If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23. .....
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其他好文 时间：
2014-10-12 22:14:38
阅读次数：
424
申明：之前的所有欧拉计划都是用python来...
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其他好文 时间：
2014-05-25 20:46:27
阅读次数：
233
Problem 3: Largest prime factor
The prime factors of 13195 are 5, 7, 13 and 29.
What is the largest prime factor of the number 600851475143 ?
求出最大素因子
我的python代码如下：
又不懂的，或者更好的可以留言，大家互相...
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其他好文 时间：
2014-05-22 18:40:17
阅读次数：
198
16、Power digit sum215= 32768 and the sum of its
digits is 3 + 2 + 7 + 6 + 8 = 26.What is the sum of the digits of the number
21000?题目大意:215= 32768 并且其...
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其他好文 时间：
2014-05-02 13:17:49
阅读次数：
1223
21、Amicable numbersLet d(n) be defined as the sum
of proper divisors ofn(numbers less thannwhich divide evenly inton). If d(a)
=band d(b) =a, whereab,...
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其他好文 时间：
2014-05-02 09:28:12
阅读次数：
776
