Datrys (2^{2}+1)(2^4+1)(2^8+1)(2^16+1)(2^32+1)+1

$$( 2 ^ { 2 } + 1 ) ( 2 ^ { 4 } + 1 ) ( 2 ^ { 8 } + 1 ) ( 2 ^ { 16 } + 1 ) ( 2 ^ { 32 } + 1 ) + 1$$

Enrhifo

$$6148914691236517206$$

Camau Ateb

Cyfrifo 2 i bŵer 2 a chael 4.

$$\left(4+1\right)\left(2^{4}+1\right)\left(2^{8}+1\right)\left(2^{16}+1\right)\left(2^{32}+1\right)+1$$

Adio 4 a 1 i gael 5.

$$5\left(2^{4}+1\right)\left(2^{8}+1\right)\left(2^{16}+1\right)\left(2^{32}+1\right)+1$$

Cyfrifo 2 i bŵer 4 a chael 16.

$$5\left(16+1\right)\left(2^{8}+1\right)\left(2^{16}+1\right)\left(2^{32}+1\right)+1$$

Adio 16 a 1 i gael 17.

$$5\times 17\left(2^{8}+1\right)\left(2^{16}+1\right)\left(2^{32}+1\right)+1$$

Lluosi 5 a 17 i gael 85.

$$85\left(2^{8}+1\right)\left(2^{16}+1\right)\left(2^{32}+1\right)+1$$

Cyfrifo 2 i bŵer 8 a chael 256.

$$85\left(256+1\right)\left(2^{16}+1\right)\left(2^{32}+1\right)+1$$

Adio 256 a 1 i gael 257.

$$85\times 257\left(2^{16}+1\right)\left(2^{32}+1\right)+1$$

Lluosi 85 a 257 i gael 21845.

$$21845\left(2^{16}+1\right)\left(2^{32}+1\right)+1$$

Cyfrifo 2 i bŵer 16 a chael 65536.

$$21845\left(65536+1\right)\left(2^{32}+1\right)+1$$

Adio 65536 a 1 i gael 65537.

$$21845\times 65537\left(2^{32}+1\right)+1$$

Lluosi 21845 a 65537 i gael 1431655765.

$$1431655765\left(2^{32}+1\right)+1$$

Cyfrifo 2 i bŵer 32 a chael 4294967296.

$$1431655765\left(4294967296+1\right)+1$$

Adio 4294967296 a 1 i gael 4294967297.

$$1431655765\times 4294967297+1$$

Lluosi 1431655765 a 4294967297 i gael 6148914691236517205.

$$6148914691236517205+1$$

Adio 6148914691236517205 a 1 i gael 6148914691236517206.

$$6148914691236517206$$

Ffactor

$$2\times 3^{2}\times 19\times 43\times 5419\times 77158673929$$