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References to 'Sophie Germain prime'
1. Cunningham chain by PrimeFan
2. examples of perfect totient numbers by PrimeFan
3. nontotient by PrimeFan
4. Prime Pages by PrimeFan
5. safe prime by PrimeFan
6. Sophie Germain by Mravinci
7. two hundred thirty-nine by PrimeFan
8. variants of the Euclid-Mullin sequence by PrimeFan