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Topic: irregular primes less than 1000
Replies: 4   Last Post: May 13, 2013 8:07 AM

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James Waldby

Posts: 348
Registered: 1/27/11
Re: irregular primes less than 1000
Posted: May 11, 2013 2:51 PM
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On Sat, 11 May 2013 11:03:55 -0400, David Bernier wrote:

> Using bernfrac() for Bernoulli numbers in PARI/gp,
> and work related to Kummer's criterion, I find
> 64 irregular primes less than 1000, copied below.
>
> Does that sound right?
>
> Ref.:
> <http://en.wikipedia.org/wiki/Regular_prime> .
>
> List:
> -----------------------------
> 37 59 67 101 103
> 131 149 157 233 257
> 263 271 283 293 307
> 311 347 353 379 389
> 401 409 421 433 461
> 463 467 491 523 541
> 547 557 577 587 593
> 607 613 617 619 631
> 647 653 659 673 677
> 683 691 727 751 757
> 761 773 797 809 811
> 821 827 839 877 881
> 887 929 953 971


Your list is correct, ie it matches up with the irregular
primes shown at <http://oeis.org/A000928>

--
jiw



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