1、π（圓周率）≈3.1415926535897932384626433832795028841971693993751058209
2、e（自然對(duì)數(shù)的底）≈2.7182818284590452353602874713526624977572470936999
3、γ（歐拉常數(shù)）≈0.57721566490153286060651209008240243104215933593992359
4、δ（菲根鮑姆常數(shù)）≈4.66920160910299067185320382046620161
5、α（菲根鮑姆常數(shù)）≈2.50290787509589282228390287321821578
6、Φ（黃金分割數(shù)）≈1.61803398874989484820458683436563811772030917980576286
7、i（虛數(shù)單位）=√-1
8、∞（無窮大）
9、K（卡特蘭數(shù)）≈0.91596559417721901505460351493238411077414937
10、Khinchin（卡欽常數(shù)）≈2.685452001065306445309714835481795693820382293994462953
11、Glaisher≈1.282427129100622636875342568869791727767688927325001192
12、√2（畢達(dá)哥拉斯常數(shù))≈1.414213562373095048801688724209698078569671875376948073176679
13、β*（Embree-Trefethen常數(shù)）≈0.70258
14、C2（孿生質(zhì)數(shù)常數(shù)）≈ 0.66016181584686957392781211001455577
15、M1（Meissel-Mertens常數(shù)）≈0.26149721284764278375542683860869585
16、B2（布朗常數(shù)）≈1.9021605823
17、B4（布朗常數(shù)）≈0.8705883800
18、∧（德布魯因-紐曼常數(shù)）>–2.7*10^-9
19、K（朗道-羅曼奴贊常數(shù)）≈0.76422365358922066
20、K（Viswanath常數(shù)）≈1.13198824
21、B'L（勒讓德常數(shù)）≈1.08366
22、μ（Ramanujan-Soldner常數(shù)、Soldner常數(shù)）≈1.451369234883381050283968485892027
23、EB（埃爾德什-波溫常數(shù)）≈1.606695152415291763