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A183077
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Numbers of the form 2^p - 1, with p prime, for which each prime divisor has the form 4j + 3.
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8
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3, 7, 31, 127, 8191, 131071, 524287, 2147483647, 8796093022207, 2305843009213693951, 604462909807314587353087, 618970019642690137449562111, 162259276829213363391578010288127, 170141183460469231731687303715884105727
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OFFSET
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1,1
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COMMENTS
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The Mersenne primes (A000668) are contained in this sequence.
Needed factorizations are in the Cunningham Project.
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LINKS
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FORMULA
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EXAMPLE
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8796093022207 = 2^43 - 1 = 431 * 9719 * 2099863.
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CROSSREFS
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KEYWORD
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nonn,hard
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AUTHOR
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STATUS
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approved
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