The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A253576 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A253576

Primes p such that digits of p do not appear in p^7.
(history; published version)

#12 by N. J. A. Sloane at Thu Jan 08 17:36:30 EST 2015

STATUS

proposed

approved

#11 by Chai Wah Wu at Mon Jan 05 13:26:31 EST 2015

STATUS

editing

proposed

#10 by Chai Wah Wu at Mon Jan 05 13:26:21 EST 2015

PROG

from sympy import isprime

STATUS

proposed

editing

#9 by Chai Wah Wu at Mon Jan 05 13:23:35 EST 2015

STATUS

editing

proposed

#8 by Chai Wah Wu at Mon Jan 05 13:23:26 EST 2015

COMMENTS

a(6) > 10**^9. - Chai Wah Wu, Jan 05 2015

#7 by Chai Wah Wu at Mon Jan 05 13:23:03 EST 2015

COMMENTS

a(6) > 10**9. - Chai Wah Wu, Jan 05 2015

PROG

(Python)

A253576_list = [n for n in range(1, 10**6) if set(str(n)) & set(str(n**7)) == set() and isprime(n)]

# Chai Wah Wu, Jan 05 2015

STATUS

approved

editing

#6 by Bruno Berselli at Mon Jan 05 03:42:39 EST 2015

STATUS

proposed

approved

#5 by Alois P. Heinz at Sun Jan 04 17:29:05 EST 2015

STATUS

editing

proposed

#4 by Alois P. Heinz at Sun Jan 04 17:28:45 EST 2015

NAME

Primes p such that digits of p do not appear in p^7.

EXAMPLE

3 and 3^7 = 2187 have no digits in common, hence 3 is in the sequence.

KEYWORD

nonn,base,more,changed

STATUS

proposed

editing

#3 by Vincenzo Librandi at Sun Jan 04 06:11:02 EST 2015

STATUS

editing

proposed