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Fermat number 2221+1

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Current data

a b n : 2 1 21
FactorDB : ID: 1000000000002000021 / Formula: 2221+1
Digits : 631306
State : CF
Remarks :
Proven composite in 1993 by Richard E. Crandall, J. Doenias, C. Norrie & Jeffrey Young

Factors

Factorization

4485296422913<13> * C<631294>