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-   -   Leyland Primes (x^y+y^x primes) (https://www.mersenneforum.org/showthread.php?t=19347)

NorbSchneider 2019-09-20 21:41

Another new PRP:
13952^17559+17559^13952, 72776 digits.

NorbSchneider 2019-09-21 21:46

Another new PRP:
11699^17560+17560^11699, 71437 digits.

NorbSchneider 2019-09-23 12:11

Another new PRP:
16696^16957+16957^16696, 71603 digits.

NorbSchneider 2019-09-26 22:20

Another new PRP:
15813^16916+16916^15813, 71031 digits.

NorbSchneider 2019-10-03 20:34

Another new PRP:
14742^16915+16915^14742, 70512 digits.

NorbSchneider 2019-10-09 21:00

Another new PRP:
15770^17589+17589^15770, 73836 digits.

pxp 2019-10-12 19:17

[QUOTE=pxp;524687]That makes L(40182,47) #1348 and advances the index to L(31870,131), #1354.[/QUOTE]

I have examined all Leyland numbers in the four gaps between L(31870,131) <67478>, #1354, and L(34684,105) <70103> and found 37 new primes. That makes L(34684,105) #1395.

pxp 2019-10-22 00:07

[QUOTE=pxp;527845]That makes L(34684,105) #1395.[/QUOTE]

I have examined all Leyland numbers in the four gaps between L(34684,105) <70103>, #1395, and L(29356,257) <70746> and found 4 new primes. That makes L(29356,257) #1403.

NorbSchneider 2019-10-30 19:40

Another new PRP:
1239^26228+26228^1239, 81126 digits.

NorbSchneider 2019-11-02 23:38

Another new PRP:
12352^18043+18043^12352, 73828 digits.

NorbSchneider 2019-11-06 23:26

Another new PRP:
15010^17699+17699^15010, 73918 digits.


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