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Carol primes (22n-1)2-2 and Kynea primes (22n+1)2-2
Current data
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History
- 2019-07-15: Checked to n = 100000, Mark Rodenkirch
- 2018-01-30: Checked to n = 30000, Gary Barnes
- 2004-02-16: Found n = 19791, Steven Harvey