Every Day Counts
Mersenne Prime Exponent Days
 
Age: 19,929 days
Date of birth
Your 24th Mersenne Prime Exponent Day is on
Monday
when you will be
19,937 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
17 Nov 2025
19,937
8
54
17 Nov 2025
19,937
8
54
17 Nov 2025
19,937
8
54
10 Jan 2026
19,991
62
54
30 Jan 2026
20,011
82
54
08 Aug 2026
20,201
272
55
11 Jan 2027
20,357
428
55
01 Oct 2032
22,447
2,518
61
02 Oct 2049
28,657
8,728
78
28 Jan 2079
39,367
19,438
107
30 Dec 2090
43,721
23,792
119
29 May 2104
48,619
28,690
133
23 Sep 2150
65,537
45,608
179
06 Nov 2245
100,279
80,350
274
26 May 2269
108,881
88,952
298
26 Feb 2330
131,071
111,142
358
19 Jun 7788
2,124,679
2,104,750
5817
Ordinal
Day Age
Date
Age
1st
2
20 Apr 1971
0
2nd
3
21 Apr 1971
0
3rd
5
23 Apr 1971
0
4th
7
25 Apr 1971
0
5th
13
01 May 1971
0
6th
17
05 May 1971
0
7th
19
07 May 1971
0
8th
31
19 May 1971
0
9th
61
18 Jun 1971
0
10th
89
16 Jul 1971
0
11th
107
03 Aug 1971
0
12th
127
23 Aug 1971
0
13th
521
20 Sep 1972
1
14th
607
15 Dec 1972
1
15th
1,279
18 Oct 1974
3
16th
2,203
29 Apr 1977
6
17th
2,281
16 Jul 1977
6
18th
3,217
07 Feb 1980
8
19th
4,253
09 Dec 1982
11
20th
4,423
28 May 1983
12
21st
9,689
27 Oct 1997
26
22nd
9,941
06 Jul 1998
27
23rd
11,213
29 Dec 2001
30
24th
19,937
17 Nov 2025
54
1
25th
21,701
16 Sep 2030
59
26th
23,209
02 Nov 2034
63
27th
44,497
13 Feb 2093
121
28th
86,243
03 Jun 2207
236