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Fermat number 2219+1
Current data
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Remarks : |
Proven composite in 2009 by different anonymous provers. |
Factors
- Proth 33629•221+1 (GF Divisor), found 1962-11-16 by Hans Riesel
- Proth 308385•221+1 (GF Divisor), found 1963 by Claude P. Wrathall
- Proth 8962167624028624126082526703•222+1 (GF Divisor), found 2009-07-18 by David Bessell
- Composite C<157770>
Factorization
70525124609<11> * 646730219521<12> * 37590055514133754286524446080499713<35> * C<157770>