PRIME1 - Prime Generator

Peter wants to generate some prime numbers for his cryptosystem. Help him! Your task is to generate all prime numbers between two given numbers!


The input begins with the number t of test cases in a single line (t<=10). In each of the next t lines there are two numbers m and n (1 <= m <= n <= 1000000000, n-m<=100000) separated by a space.


For every test case print all prime numbers p such that m <= p <= n, one number per line, test cases separated by an empty line.


1 10
3 5


Warning: large Input/Output data, be careful with certain languages (though most should be OK if the algorithm is well designed)


After cluster change, please consider PRINT as a more challenging problem.

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rohit5840: 2017-06-22 05:22:34

where i can see my submitted answer?

larunrahul: 2017-06-21 06:30:53

For each of the number in the range,
1) find if it is prime or not (iterate till square root of number).
2) use sieve to cancel all its multiples within given range

callmebray: 2017-06-20 18:58:00

This may be the dumbest question ever asked on here.. I know I can figure out how to print all the prime numbers, but i'm not sure how to actually read the input into my Javascript function?

Do I just use readline(); and the input comes through as an array that I can save into a variable?

for example, var data = readline();
and now the input is saved into the variable data as the array [2, [1, 10], [3, 5]]?

or does the input come through as text that I need to split? or do I need to do it some other way?

hzshang: 2017-06-20 16:51:51

be careful of 1 and 2 =,=

iamnoob_94: 2017-06-20 06:26:58

My code is working fine in my system but it is showing here that time limit exceeded.I wrote the code in java.Any solution???

jaykay12: 2017-06-18 17:44:04

AC in one Go. :) Use Segmented Sieve Concept with slight Logical change.

chandan pandey: 2017-06-18 13:58:01

@priyanka_2: Use sieve algorithm.

nd_1998: 2017-06-18 13:34:24

why i am getting wrong ans in c ?

Last edit: 2017-06-18 13:34:57
hayatt143: 2017-06-14 09:10:07

can anyone tell me how to see submissions of others?

shubhit: 2017-06-10 20:01:56

why is it coming runtime error

Added by:Adam Dzedzej
Time limit:6s
Source limit:50000B
Memory limit:1536MB
Cluster: Cube (Intel G860)
Languages:All except: NODEJS PERL6