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by NG | Mar 16, 2018 | Hosta

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308 is the natural number following 307 and preceding 309.

In mathematics

308 is nontotient.^[1]
308 is the totient sum of the first 41 integers.^[2]
308 is a heptagonal pyramidal number.^[3]
308 is the sum of two consecutive primes (151 + 157).^[4]
$10^{308}$ is the largest power of ten that can be stored in double-precision floating-point format.^{[citation needed]}

References

^ Sloane, N. J. A. (ed.). "Sequence A005277 (Nontotients: even numbers k such that phi(m)=k has no solution)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
^ Sloane, N. J. A. (ed.). "Sequence A046992 (a(n) = Sum_{k=1..n} pi(k))". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
^ Sloane, N. J. A. (ed.). "Sequence A002413 (Heptagonal pyramidal numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
^ Sloane, N. J. A. (ed.). "Sequence A001043 (Numbers that are the sum of 2 successive primes.)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.

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