4,294,967,297 is the fifth Fermat number, equal to \(2^{2^5} + 1\). It was proven to be composite by Euler in 1732, disproving Fermat's conjecture that all numbers of the form \(2^{2^n} + 1\) are prime. It can be factored into 641*6700417.[1]

Approximations

Notation Approximation
Arrow notation \(2\uparrow32 + 1\) (exact)
Scientific notation \(4.2964967297\times10^9\) (exact)
Steinhaus-Moser Notation 10[3]
BEAF {2, 32}
Hyperfactorial array notation 13!
Hardy hierarchy \(H_{\omega^2}(27)\)
Fast-growing hierarchy \(f_2(27)\)
Slow-growing hierarchy \(g_{\omega^{\omega^5}}(2)\)

Sources

https://en.wikipedia.org/wiki/Fermat_number

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