λ
Sequence Observatory

7,071,409

7071409
Deficient Odd Prime

Starting at 7,071,409, the Collatz iteration reaches 1 after 129 steps. The first transition is 21214228; the starting value is odd with 2 positive divisors.

Prime Factor Structure

Factorization String 7071409
Distinct Prime Factors 1
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 2
Divisor Sum (σ) 7,071,410
Proper Divisor Sum 1
Digit Sum / Digital Root 28 (Root: 1)
Adjacent Primes #7071367 ← → #7071413

Radix Representation

Decimal 7071409
Binary 11010111110011010110001 (23 bits)
Octal 0o32763261
Hexadecimal 0x6BE6B1

Divisor Catalog (2)

Collatz Trajectory (129 steps to reach 1)

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

7,071,409 21,214,228 10,607,114 5,303,557 15,910,672 7,955,336 3,977,668 1,988,834 994,417 2,983,252 1,491,626 745,813 2,237,440 1,118,720 559,360 279,680 139,840 69,920 34,960 17,480 8,740 4,370 2,185 6,556 3,278 1,639 4,918 2,459 7,378 3,689 11,068 5,534 2,767 8,302 4,151 12,454 6,227 18,682 9,341 28,024 14,012 7,006 3,503 10,510 5,255 15,766 7,883 23,650 11,825 35,476 17,738 8,869 26,608 13,304 6,652 3,326 1,663 4,990 2,495 7,486

More profiles

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