1MATHO-PRIMES(1) Mathomatic Utilities MATHO-PRIMES(1)
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6 matho-primes - generate consecutive prime numbers
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10 matho-primes [start [stop]] ["twin"] ["pal" [base]]
11 matho-primes [-htu] [-c count] [-p base] [start [stop]]
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15 This command-line utility is optionally part of the mathomatic(1) pack‐
16 age. It quickly computes any number of consecutive prime numbers using
17 a windowing, memory efficient sieve of Eratosthenes algorithm, dumping
18 them to standard output. They are displayed one prime per line in
19 ascending order, unless the "twin" option is specified, which displays
20 only twin primes, two primes per line.
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22 Generates up to 18 decimal digit primes, or whatever is the number of
23 digits of precision for a long double in the C compiler used to compile
24 this utility. All numbers displayed by this utility are decimal (base
25 10) prime numbers. A prime number is an integer that cannot be fac‐
26 tored.
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28 A range may be specified on the command line, otherwise the starting
29 number and the number of primes to output is prompted for. The range
30 is start to stop inclusive, and stop must be greater than or equal to
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33 If the -c option is specified, the number of lines of primes displayed
34 is limited to the decimal count that follows this option.
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36 If the -t or "twin" option is specified on the command line, only twin
37 primes will be displayed. Twin primes are two primes that differ in
38 value by 2. Each twin pair is displayed together on the same line sep‐
39 arated by a space character.
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41 If the -p or "pal" option is specified on the command line, only palin‐
42 dromic primes are displayed. Palindromes are symmetrical, they read
43 exactly the same forward and backward. The palindromic number base may
44 be specified, the default is base 10. The base can be any integer
45 greater than 1. Primes are always displayed in decimal (base 10).
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47 The version number and short help on the allowed command-line parame‐
48 ters and usage information are displayed when given the -h option.
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50 With the -u option, all output (standard output and standard error out‐
51 put) is set to be unbuffered, making all output happen immediately,
52 instead of when the output buffer is full or when the program termi‐
53 nates or waits for input.
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57 George Gesslein II (gesslein@linux.com) at "http://www.mathomatic.org".
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61 If you find a bug, please report it to the author or at
62 "https://launchpad.net/mathomatic".
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66 mathomatic(1), primorial(1), matho-mult(1), matho-sum(1)
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70Mathomatic MATHO-PRIMES(1)