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Pentlastillion is equal to 103*1015.[1] It is equal to 1 followed by 3 quadrillion zeros. It is also called "one novenonagintanongentillinovenonagintanongentillinovenonagintanongentillinovenonagintanongentillinovenonagintanongentillion" in the short scale. It is 3,000,000,000,000,001 digits long.

Pentlastillion is also known as "one nongennovemnonaginmilliamilliamilliamillianongennovemnonaginmilliamilliamillianongennovemnonaginmilliamillianongennovemnonaginmillianongennovemnonagintillion" according to Landon Curt Noll's The English name of a number.

Approximations[]

Notation Lower bound Upper bound
Scientific notation \(1\times10^{3000000000000000}\)
Arrow notation \(1000\uparrow10\uparrow15\)
Down-arrow notation \(1000\downarrow\downarrow6\)
Steinhaus-Moser Notation 12[3][3] 13[3][3]
Copy notation 2[2[16]] 3[3[16]]
H* function H(999H(3)) H(H(4))
Taro's multivariable Ackermann function A(3,A(3,50)) A(3,A(3,51))
Pound-Star Notation #*((1))*(43)*4 #*((1))*(8)*7
BEAF {1000,{10,15}}
Hyper-E notation E(3E15)
Bashicu matrix system (0)(1)[7] (0)(1)[8]
Hyperfactorial array notation (16!)! (17!)!
Fast-growing hierarchy \(f_2(f_2(47))\) \(f_2(f_2(48))\)
Hardy hierarchy \(H_{\omega^22}(47)\) \(H_{\omega^22}(48)\)
Slow-growing hierarchy \(g_{\omega^{\omega^{\omega+5}3}}(10)\)

Sources[]

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