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GIMPS has discovered a new largest known prime number: 2^{82589933}1 (24,862,048 digits) Observing that 521, M(521), 953, 61, and M(61) are prime, it is curious that 521*2^953+61 is also prime. [Noll] The first emirp p such that 2p+1 and 3p+2 are prime. [Loungrides] The largest threedigit centered heptagonal number. [Homewood] The smallest emirp p such that prime(p)*p + (p) yields another emirp. [Bajpai]
(There are 2 curios for this number that have not yet been approved by an editor.) To link to this page use /curios/page.php?number_id=7646
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