Every Day Counts
Mersenne Prime Exponent Days
 
Age: 21,674 days
Date of birth
Your 25th Mersenne Prime Exponent Day is on
Saturday
when you will be
21,701 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
14 Jan 2025
21,683
9
59
01 Feb 2025
21,701
27
59
21 Jun 2025
21,841
167
59
30 Sep 2026
22,307
633
61
17 Feb 2027
22,447
773
61
01 May 2029
23,251
1,577
63
18 Feb 2044
28,657
6,983
78
03 Feb 2048
30,103
8,429
82
09 Jul 2067
37,199
15,525
101
15 Jun 2073
39,367
17,693
107
17 May 2085
43,721
22,047
119
14 Oct 2098
48,619
26,945
133
08 Feb 2145
65,537
43,863
179
24 Mar 2240
100,279
78,605
274
12 Oct 2263
108,881
87,207
298
14 Jul 2324
131,071
109,397
358
05 Nov 7782
2,124,679
2,103,005
5817
Ordinal
Day Age
Date
Age
1st
2
05 Sep 1965
0
2nd
3
06 Sep 1965
0
3rd
5
08 Sep 1965
0
4th
7
10 Sep 1965
0
5th
13
16 Sep 1965
0
6th
17
20 Sep 1965
0
7th
19
22 Sep 1965
0
8th
31
04 Oct 1965
0
9th
61
03 Nov 1965
0
10th
89
01 Dec 1965
0
11th
107
19 Dec 1965
0
12th
127
08 Jan 1966
0
13th
521
06 Feb 1967
1
14th
607
03 May 1967
1
15th
1,279
05 Mar 1969
3
16th
2,203
15 Sep 1971
6
17th
2,281
02 Dec 1971
6
18th
3,217
25 Jun 1974
8
19th
4,253
26 Apr 1977
11
20th
4,423
13 Oct 1977
12
21st
9,689
14 Mar 1992
26
22nd
9,941
21 Nov 1992
27
23rd
11,213
16 May 1996
30
24th
19,937
04 Apr 2020
54
25th
21,701
01 Feb 2025
59
1
26th
23,209
20 Mar 2029
63
27th
44,497
02 Jul 2087
121
28th
86,243
19 Oct 2201
236