(Curiously, this is a Woodall number: 3 ⋅ 2 402 653 211 − 1 = 402 653 184 ⋅ 2 402 653 184 − 1 {\displaystyle 3\cdot 2^{402\,653\,211}-1=402\,653\,184\cdot 2^{402\,653\,184}-1} .
（有趣的是，這是個胡道爾數: 3 ⋅ 2 402 653 211 − 1 = 402 653 184 ⋅ 2 402 653 184 − 1 {\displaystyle 3\cdot 2^{402\,653\,211}-1=402\,653\,184\cdot 2^{402\,653\,184}-1} 。