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| + | {{Types of Primes Infobox |
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| + | |title=Twin Primes |
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| + | |discov= |
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| + | |amount= |
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| + | |expression=p and p+2 are both primes. |
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| + | |1st=([[3]], [[5]]), (5, [[7]]), <br>([[11]], [[13]]), ([[17]], [[19]])}} |
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'''Twin primes '''are numbers wherein two numbers have a gap of two. According to Wikipedia, there are 808,675,888,577,436 twin prime pairs below 10^18, or 1 quintillion. Can you find all of those? |
'''Twin primes '''are numbers wherein two numbers have a gap of two. According to Wikipedia, there are 808,675,888,577,436 twin prime pairs below 10^18, or 1 quintillion. Can you find all of those? |
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Revision as of 04:18, 28 July 2014
| Twin Primes
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Basic Info
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| Discovered by | |
| Number of | |
| Description | p and p+2 are both primes. |
| First Few | (3, 5), (5, 7), (11, 13), (17, 19) |
Twin primes are numbers wherein two numbers have a gap of two. According to Wikipedia, there are 808,675,888,577,436 twin prime pairs below 10^18, or 1 quintillion. Can you find all of those?
Examples
3 and 5 are twin primes
5 and 7 are twin primes
11 and 13 are twin primes, et al.
Largest known twin prime
3756801695685 · 2^666669 ± 1.
See also
- Cousin Primes, wherein the gap is four.
- Sexy Primes, wherein the gap is six.