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This page contains numbers appearing in computer arithmetic.

## List of numbers appearing in computer arithmetic Edit

• 32,767 is a positive integer equal to $$2^{15} - 1 = 2^{2^4 - 1} - 1$$. It is notable in computer science for being the maximum value of a 16-bit signed integer, which spans the range [-32768, 32767]. In English, its full name is "thirty-two thousand seven hundred sixty-seven." Its prime factorization is 7 × 31 × 151.
• There are 2 × 192 × 9 × 106 + 2 × 106 - 1 = 3,457,999,999 different finite numbers, which can be represented exactly in the 32-bit decimal floating point format.
• Its prime factorization is 53 × 73 × 107 × 8,353.
• There are 232 - 224 - 1 = 4,278,190,079 different finite numbers, which can be represented exactly in the 32-bit floating point format.
• This number is a prime number.
• 9,007,199,254,740,991 is a positive integer equal to $$2^{53} - 1$$. It is notable in computer science for being the largest odd number which can be represented exactly in the double floating-point format (which has a 53-bit significand).
• Its prime factorization is 6,361 × 69,431 × 20,394,401.
• 9,223,372,036,854,775,807 is a positive integer equal to $$2^{63} - 1 = 2^{2^6 - 1} - 1$$. It is notable in computer science for being the maximum value of a 64-bit signed integer, which has the range [-9223372036854775808, 9223372036854775807].
• Its full name in English in the short scale is "nine quintillion two hundred twenty-three quadrillion three hundred seventy-two trillion thirty-six billion eight hundred fifty-four million seven hundred seventy-five thousand eight hundred seven".
• Its prime factorization is 72 × 73 × 127 × 337 × 92,737 × 649,657.
• There are 2 × 768 × 9 × 1015 + 2 × 1015 - 1 = 13,825,999,999,999,999,999 different finite numbers, which can be represented exactly in the 64-bit decimal floating point format.
• Its prime factorization is 11 × 1,256,909,090,909,090,909.
• There are 264 - 253 - 1 = 18,437,736,874,454,810,623 different finite numbers, which can be represented exactly in the 64-bit floating point format.
• Its prime factorization is 230,999 × 79,817,388,276,377.
• 1,124,000,727,777,607,680,000 is a positive integer equal to $$22!$$. It is notable in computer science for being the largest factorial number which can be represented exactly in the double floating-point format (which has a 53-bit significand).
• 1022 is a positive integer equal to ten sextillion. It is notable in computer science for being the largest power of ten which can be represented exactly in the double floating-point format (which has a 53-bit significand).

## Approximations in other notations Edit

For 1,124,000,727,777,607,680,000:

Notation Lower bound Upper bound
Scientific notation $$1.124\times10^{21}$$ $$1.125\times10^{21}$$
Arrow notation $$10↑21$$ $$2\uparrow70$$
Steinhaus-Moser Notation 17[3] 18[3]
Strong array notation s(10,21) s(2,70)
Copy notation 1[22] 2[[3]]
Taro's multivariable Ackermann function A(3,67) A(3,68)
Pound-Star Notation #*(2)*63 #*(2)*64
BEAF {10,21} {2,70}
Hyperfactorial array notation 22!
Fast-growing hierarchy $$f_2(63)$$ $$f_2(64)$$
Hardy hierarchy $$H_{\omega^2}(63)$$ $$H_{\omega^2}(64)$$
Slow-growing hierarchy $$g_{\omega^{\omega 2+1}}(10)$$ $$g_{\omega^{\omega^22+3}}(4)$$

For 1022:

Notation Lower bound Upper bound
Scientific notation $$1\times10^{22}$$
Arrow notation $$10\uparrow22$$
Steinhaus-Moser Notation 17[3] 18[3]
Copy notation 9[22] 1[23]
Taro's multivariable Ackermann function A(3,70) A(3,71)
Pound-Star Notation #*(2,0,7,7)*4 #*(2,6,3)*7
BEAF {10,22}
Hyper-E notation E22
Hyperfactorial array notation 22! 23!
Fast-growing hierarchy $$f_2(67)$$ $$f_2(68)$$
Hardy hierarchy $$H_{\omega^2}(67)$$ $$H_{\omega^2}(68)$$
Slow-growing hierarchy $$g_{\omega^{\omega2+2}}(10)$$