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A045710 Primes with first digit 4. 22
41, 43, 47, 401, 409, 419, 421, 431, 433, 439, 443, 449, 457, 461, 463, 467, 479, 487, 491, 499, 4001, 4003, 4007, 4013, 4019, 4021, 4027, 4049, 4051, 4057, 4073, 4079, 4091, 4093, 4099, 4111, 4127, 4129, 4133, 4139, 4153, 4157, 4159, 4177, 4201, 4211 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
MATHEMATICA
Select[Table[Prime[n], {n, 1000}], First[IntegerDigits[#]] == 4 &]
Flatten[Table[Prime[Range[PrimePi[4 * 10^n] + 1, PrimePi[5 * 10^n]]], {n, 3}]] (* Alonso del Arte, Jul 19 2014 *)
PROG
(Magma) [p: p in PrimesUpTo(10^4) | Intseq(p)[#Intseq(p)] eq 4]; // Bruno Berselli, Jul 19 2014
CROSSREFS
For primes with initial digit d (1 <= d <= 9) see A045707, A045708, A045709, A045710, A045711, A045712, A045713, A045714, A045715; A073517, A073516, A073515, A073514, A073513, A073512, A073511, A073510, A073509
Column k=4 of A262369.
Sequence in context: A345346 A062669 A284290 * A090152 A139774 A007643
KEYWORD
nonn,base,easy
AUTHOR
EXTENSIONS
More terms from Erich Friedman.
STATUS
approved

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Last modified June 15 02:53 EDT 2024. Contains 373402 sequences. (Running on oeis4.)