Every Day Counts
Mersenne Prime Exponent Days
 
Age: 15,276 days
Date of birth
Your 24th Mersenne Prime Exponent Day is on
Thursday
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
13 Dec 2025
15,277
tomorrow
41
18 Jan 2026
15,313
37
41
16 Apr 2026
15,401
125
42
05 Jun 2026
15,451
175
42
13 Feb 2028
16,069
793
43
11 Apr 2028
16,127
851
44
17 Sep 2029
16,651
1,375
45
28 Mar 2030
16,843
1,567
46
11 Jan 2032
17,497
2,221
47
25 Nov 2033
18,181
2,905
49
19 Mar 2037
19,391
4,115
53
16 Sep 2038
19,937
4,661
54
01 Aug 2062
28,657
13,381
78
30 Oct 2103
43,721
28,445
119
28 Mar 2117
48,619
33,343
133
23 Jul 2163
65,537
50,261
179
05 Sep 2258
100,279
85,003
274
26 Dec 2342
131,071
115,795
358
Ordinal
Day Age
Date
Age
1st
2
17 Feb 1984
0
2nd
3
18 Feb 1984
0
3rd
5
20 Feb 1984
0
4th
7
22 Feb 1984
0
5th
13
28 Feb 1984
0
6th
17
03 Mar 1984
0
7th
19
05 Mar 1984
0
8th
31
17 Mar 1984
0
9th
61
16 Apr 1984
0
10th
89
14 May 1984
0
11th
107
01 Jun 1984
0
12th
127
21 Jun 1984
0
13th
521
20 Jul 1985
1
14th
607
14 Oct 1985
1
15th
1,279
17 Aug 1987
3
16th
2,203
26 Feb 1990
6
17th
2,281
15 May 1990
6
18th
3,217
06 Dec 1992
8
19th
4,253
08 Oct 1995
11
20th
4,423
26 Mar 1996
12
21st
9,689
26 Aug 2010
26
22nd
9,941
05 May 2011
27
23rd
11,213
28 Oct 2014
30
24th
19,937
16 Sep 2038
54
1
25th
21,701
16 Jul 2043
59
26th
23,209
01 Sep 2047
63
27th
44,497
14 Dec 2105
121
28th
86,243
01 Apr 2220
236