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228
This number is a composite.
228 ± 1, 822 ± 1 and (228 + 822) ± 1 are all
primes
. [
Luhn
]
(There are 4 curios for this number that have not yet been approved by an editor.)
Printed from the PrimePages <t5k.org> © G. L. Honaker and Reginald McLean
228 ± 1, 822 ± 1 and (228 + 822) ± 1 are all primes. [Luhn]