Every Day Counts
Mersenne Prime Exponent Days
 
Age: 23,159 days
Date of birth
Your 26th Mersenne Prime Exponent Day is on
Wednesday
when you will be
23,209 days old

These are primes p such that 2p - 1 is prime.

For Mersenne Prime Days see Mersenne Prime Days.

Remind me, please


Next Prime Events
Day Age
Event
Days Ahead
Year Age
20 Oct 2026
23,159
today
63
09 Dec 2026
23,209
50
63
20 Jan 2027
23,251
92
63
31 Mar 2027
23,321
162
63
23 Sep 2027
23,497
338
64
19 Jan 2029
23,981
822
65
08 Nov 2041
28,657
5,498
78
24 Oct 2045
30,103
6,944
82
29 Mar 2065
37,199
14,040
101
06 Mar 2071
39,367
16,208
107
05 Feb 2083
43,721
20,562
119
04 Jul 2096
48,619
25,460
133
30 Oct 2142
65,537
42,378
179
13 Dec 2237
100,279
77,120
274
02 Jul 2261
108,881
85,722
298
04 Apr 2322
131,071
107,912
358
26 Jul 7780
2,124,679
2,101,520
5817
Ordinal
Day Age
Date
Age
1st
2
27 May 1963
0
2nd
3
28 May 1963
0
3rd
5
30 May 1963
0
4th
7
01 Jun 1963
0
5th
13
07 Jun 1963
0
6th
17
11 Jun 1963
0
7th
19
13 Jun 1963
0
8th
31
25 Jun 1963
0
9th
61
25 Jul 1963
0
10th
89
22 Aug 1963
0
11th
107
09 Sep 1963
0
12th
127
29 Sep 1963
0
13th
521
27 Oct 1964
1
14th
607
21 Jan 1965
1
15th
1,279
24 Nov 1966
3
16th
2,203
05 Jun 1969
6
17th
2,281
22 Aug 1969
6
18th
3,217
15 Mar 1972
8
19th
4,253
15 Jan 1975
11
20th
4,423
04 Jul 1975
12
21st
9,689
03 Dec 1989
26
22nd
9,941
12 Aug 1990
27
23rd
11,213
04 Feb 1994
30
24th
19,937
24 Dec 2017
54
25th
21,701
23 Oct 2022
59
26th
23,209
09 Dec 2026
63
1
27th
44,497
22 Mar 2085
121
28th
86,243
09 Jul 2199
236