877 (eight hundred [and] seventy-seven) is the natural number following 878 and preceding 876. It is also known as B7.
In mathematics 877 is the 151st prime number, a de Polignac prime, and a prime-indexed prime. It is also a Bell number, since it satisfies the recurrence relation
Since 877 is a prime, it is also known as a Bell prime, which is the 3rd one. Out of the first 14 Bell numbers, only four are prime, which includes 877 (2, 5, 877, 27644437). The next two are = 35742549198872617291353508656626642567 = 359334085968622831041960188598043661065388726959079837.
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