449

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Number

$449$ (four hundred and forty-nine) is:

The $87$th prime number

The smaller of the $5$th pair of primes whose prime gap is $8$:

$457 - 449 = 8$

The $11$th minimal prime base $10$ after $2$, $3$, $5$, $7$, $11$, $19$, $41$, $61$, $89$, $409$

The $12$th Proth prime after $3$, $5$, $13$, $17$, $41$, $97$, $113$, $193$, $241$, $257$, $353$:

$449 = 7 \times 2^6 + 1$

The $23$rd near-repdigit prime after $101$, $113$, $131$, $151$, $181$, $191$, $199$, $211$, $223$, $227$, $229$, $233$, $277$, $311$, $313$, $331$, $337$, $353$, $373$, $383$, $433$, $443$

Also see

• Previous  ... Next: Proth Prime
• Previous  ... Next: Prime Gaps of 8
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• Previous  ... Next: Near-Repdigit Prime