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 | \(g_{\omega^{\omega^{\omega+5}3}}(10)\) |