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A135623
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Mersenne primes written backwards.
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3
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3, 7, 13, 721, 1918, 170131, 782425, 7463847412, 1593963129003485032, 111265944731096246910079816, 721882010875193363312928672952261, 727501488517303786137132964064381141071
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refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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LINKS
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EXAMPLE
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a(3)=13 because the 3rd Mersenne prime is 31.
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MATHEMATICA
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IntegerReverse[2^MersennePrimeExponent[Range[15]]-1] (* Harvey P. Dale, Feb 26 2023 *)
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CROSSREFS
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KEYWORD
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base,easy,nonn
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AUTHOR
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STATUS
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approved
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